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<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>teo</title>
<meta property="og:title" content="teo">
<meta property="og:type" content="website">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
<style>
:root{
--bg:#ffffff;
--surface:#f7f8f9;
--surface-2:#f1f2f4;
--text:#18181b;
--muted:#6b7280;
--faint:#9ca3af;
--border:#e6e7eb;
--accent:#15a34a;
--accent-soft:rgba(21,163,74,.10);
--shadow:0 1px 2px rgba(24,24,27,.04),0 4px 16px rgba(24,24,27,.05);
}
:root[data-theme="dark"]{
--bg:#0b0b0d;
--surface:#141417;
--surface-2:#1a1a1e;
--text:#ededf0;
--muted:#9ca0aa;
--faint:#6b7078;
--border:#26262c;
--accent:#4ade80;
--accent-soft:rgba(74,222,128,.10);
--shadow:0 1px 2px rgba(0,0,0,.3),0 4px 20px rgba(0,0,0,.35);
}
@media (prefers-color-scheme:dark){
:root:not([data-theme="light"]){
--bg:#0b0b0d;
--surface:#141417;
--surface-2:#1a1a1e;
--text:#ededf0;
--muted:#9ca0aa;
--faint:#6b7078;
--border:#26262c;
--accent:#4ade80;
--accent-soft:rgba(74,222,128,.10);
--shadow:0 1px 2px rgba(0,0,0,.3),0 4px 20px rgba(0,0,0,.35);
}
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
background:var(--bg);
color:var(--text);
font-family:'Inter',-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;
line-height:1.66;
font-size:12px;
-webkit-font-smoothing:antialiased;
text-rendering:optimizeLegibility;
}
::selection{background:var(--accent-soft);color:var(--text)}
.mono{font-family:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace}
a{color:inherit;text-decoration:none}
/* ---------- header ---------- */
header{
position:sticky;top:0;z-index:50;
backdrop-filter:saturate(180%) blur(12px);
background:color-mix(in srgb,var(--bg) 80%,transparent);
border-bottom:1px solid var(--border);
}
.nav{
max-width:720px;margin:0 auto;padding:14px 24px;
display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{font-weight:600;letter-spacing:-.01em;font-size:13.5px;display:flex;align-items:center;gap:8px}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.nav-links{display:flex;gap:20px;align-items:center;font-size:12px}
.nav-links a{color:var(--muted);transition:color .15s}
.nav-links a:hover{color:var(--text)}
.theme-btn{
border:1px solid var(--border);background:var(--surface);color:var(--muted);
width:34px;height:34px;border-radius:9px;cursor:pointer;display:grid;place-items:center;
transition:.15s;font-size:13.5px;
}
.theme-btn:hover{color:var(--text);border-color:var(--faint)}
@media(max-width:560px){.nav{padding:12px 18px;gap:10px}.nav-links{gap:13px;font-size:11px}.brand{font-size:12.5px}.theme-btn{width:30px;height:30px}}
/* ---------- layout ---------- */
main{max-width:720px;margin:0 auto;padding:0 24px}
section{padding:24px 0;border-bottom:1px solid var(--border)}
section:last-of-type{border-bottom:none}
.eyebrow{
font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;
color:var(--accent);letter-spacing:.02em;margin-bottom:13px;display:flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"[+]";opacity:.5}
#etc .eyebrow::before{content:"[-]"}
h1{font-size:clamp(20px,4vw,25px);font-weight:700;letter-spacing:-.03em;line-height:1.15}
h2{font-size:16px;font-weight:600;letter-spacing:-.02em;margin-bottom:6px}
p{color:var(--text)}
.lead{color:var(--muted);font-size:12px}
/* ---------- hero ---------- */
.hero{padding-top:32px;padding-bottom:26px}
.hero h1{margin-bottom:16px}
.hero .role{color:var(--accent);font-weight:600}
.hero-desc{color:var(--muted);font-size:12.5px;max-width:560px;margin-bottom:20px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 10px;margin-bottom:30px}
.chip{
font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--muted);
background:var(--surface);border:1px solid var(--border);
padding:5px 11px;border-radius:100px;
}
.chip b{color:var(--accent);font-weight:600}
.cta{display:flex;gap:10px;flex-wrap:wrap}
.btn{
display:inline-flex;align-items:center;gap:7px;
font-size:12.5px;font-weight:500;padding:9px 16px;border-radius:10px;
border:1px solid var(--border);background:var(--surface);color:var(--text);
transition:.15s;
}
.btn:hover{border-color:var(--faint);transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:#062611;border-color:transparent}
:root[data-theme="dark"] .btn.primary{color:#052e16}
.btn.primary:hover{filter:brightness(1.05)}
.btn.icon-btn{padding:0;width:34px;height:34px;justify-content:center;gap:0}
.btn.icon-btn .i{width:15px;height:15px}
/* ---------- prose ---------- */
.prose p{margin-bottom:16px;color:var(--muted)}
.prose p strong{color:var(--text);font-weight:600}
.prose a.link{color:var(--text);border-bottom:1px solid var(--accent);transition:.15s;font-weight:500}
.prose a.link:hover{background:var(--accent-soft)}
/* ---------- cve cards ---------- */
.cards{display:flex;flex-direction:column;gap:14px;margin-top:4px}
.card{
display:block;background:var(--surface);border:1px solid var(--border);
border-radius:14px;padding:0;transition:border-color .18s,box-shadow .18s;position:relative;overflow:hidden;
}
.card:hover{border-color:var(--faint)}
.card[open]{box-shadow:var(--shadow)}
.card>summary{
list-style:none;cursor:pointer;padding:17px 22px;
display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.card>summary::-webkit-details-marker{display:none}
.card>summary:focus-visible{outline:2px solid var(--sevc,var(--accent));outline-offset:-2px;border-radius:14px}
.card .sum-main{min-width:0}
.card .chev{
color:var(--faint);font-size:18px;line-height:1;flex-shrink:0;
transition:transform .2s;transform:rotate(0deg);
}
.card[open] .chev{transform:rotate(90deg);color:var(--sevc,var(--accent))}
.card-body{padding:0 22px 20px;animation:fade .22s ease}
@keyframes fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
a.card.link-card{padding:17px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
a.card.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
a.card.link-card .chev{transition:transform .18s,color .18s}
a.card.link-card:hover .chev{transform:translate(3px,-3px);color:var(--sevc,var(--accent))}
.card.award-card{padding:17px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.card.award-card .medal{font-size:20px;line-height:1;flex-shrink:0}
.card::before{display:none}
/* severity color system */
.card.sv-crit{--sevc:#dc2626;--sevbg:rgba(220,38,38,.12)}
.card.sv-high{--sevc:#ea580c;--sevbg:rgba(234,88,12,.12)}
.card.sv-med {--sevc:#ca8a04;--sevbg:rgba(202,138,4,.15)}
.card.sv-low {--sevc:#2563eb;--sevbg:rgba(37,99,235,.12)}
.card.sv-na {--sevc:#6b7280;--sevbg:rgba(107,114,128,.13)}
.card.sv-brand{--sevc:var(--accent);--sevbg:var(--accent-soft)}
.card.sv-award{--sevc:#7c3aed;--sevbg:rgba(124,58,237,.13)}
:root[data-theme="dark"] .card.sv-award{--sevc:#a78bfa}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .card.sv-award{--sevc:#a78bfa}}
:root[data-theme="dark"] .card.sv-na {--sevc:#9ca3af}
:root[data-theme="dark"] .card.sv-crit{--sevc:#f87171}
:root[data-theme="dark"] .card.sv-high{--sevc:#fb923c}
:root[data-theme="dark"] .card.sv-med {--sevc:#fbbf24}
:root[data-theme="dark"] .card.sv-low {--sevc:#60a5fa}
@media(prefers-color-scheme:dark){
:root:not([data-theme="light"]) .card.sv-crit{--sevc:#f87171}
:root:not([data-theme="light"]) .card.sv-high{--sevc:#fb923c}
:root:not([data-theme="light"]) .card.sv-med {--sevc:#fbbf24}
:root:not([data-theme="light"]) .card.sv-low {--sevc:#60a5fa}
:root:not([data-theme="light"]) .card.sv-na {--sevc:#9ca3af}
}
.sev-pill{
font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:600;letter-spacing:.04em;
padding:2px 9px;border-radius:6px;text-transform:uppercase;white-space:nowrap;
background:var(--sevbg);color:var(--sevc);border:1px solid color-mix(in srgb,var(--sevc) 30%,transparent);
}
.cvss-ver{
font-family:'JetBrains Mono',monospace;font-size:9px;font-weight:600;letter-spacing:.03em;
padding:2px 7px;border-radius:6px;white-space:nowrap;
background:var(--surface-2);color:var(--muted);border:1px solid var(--border);
}
.card-top{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:9px}
.cve-id{font-family:'JetBrains Mono',monospace;font-size:11.5px;font-weight:600;color:var(--sevc,var(--accent))}
.badge{
font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:600;letter-spacing:.03em;
padding:2px 8px;border-radius:6px;text-transform:uppercase;
}
.badge.pub{background:var(--accent-soft);color:var(--accent)}
.badge.acc{background:rgba(234,179,8,.14);color:#a67c00}
:root[data-theme="dark"] .badge.acc{color:#fbbf24}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .badge.acc{color:#fbbf24}}
.badge.sev{background:var(--surface-2);color:var(--muted)}
.card h3{font-size:12.5px;font-weight:600;letter-spacing:-.01em;margin-bottom:6px}
.card .desc{font-size:12.5px;color:var(--muted);line-height:1.6}
.card .tgt{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--faint);margin-top:12px;word-break:break-word}
.card>summary h3{margin-bottom:0}
.adv-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.adv-links a{
font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;
color:var(--sevc,var(--accent));background:var(--sevbg,var(--accent-soft));
border:1px solid color-mix(in srgb,var(--sevc,var(--accent)) 26%,transparent);
padding:6px 12px;border-radius:8px;transition:.15s;
}
.adv-links a:hover{filter:brightness(1.06);transform:translateY(-1px)}
/* ---------- project list ---------- */
.proj{display:flex;flex-direction:column;gap:2px}
.proj-item{
display:flex;gap:16px;padding:13px 0;border-top:1px solid var(--border);align-items:flex-start;
}
.proj-item:first-child{border-top:none}
.proj-item:last-child{padding-bottom:0}
a.proj-item{text-decoration:none}
a.proj-item:hover h3{color:var(--accent)}
.speakers{margin-top:6px;font-size:11.5px;color:var(--muted)}
.speakers strong{color:var(--text);font-weight:600}
.proj-idx{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--faint);padding-top:3px;min-width:24px}
.proj-body{flex:1}
.proj-body h3{font-size:12.5px;font-weight:600;margin-bottom:4px;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.proj-body h3 .tag{font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:500;color:var(--muted);background:var(--surface);border:1px solid var(--border);padding:2px 7px;border-radius:6px}
.proj-body p{font-size:12.5px;color:var(--muted);line-height:1.6}
.proj-body a.gh{font-size:11.5px;color:var(--accent);font-family:'JetBrains Mono',monospace;display:inline-block;margin-top:6px}
.proj-body a.gh:hover{text-decoration:underline}
.talk-meta{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--muted);margin-top:8px;display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center}
.talk-meta .ev{color:var(--accent);font-weight:500}
.talk-meta .sep{color:var(--border)}
/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:6px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px 16px;text-align:center}
.stat .num{font-family:'JetBrains Mono',monospace;font-size:23.5px;font-weight:700;color:var(--text);line-height:1}
.stat .num span{color:var(--accent)}
.stat .lbl{font-size:11px;color:var(--muted);margin-top:8px}
@media(max-width:560px){.stats{grid-template-columns:1fr 1fr}.stat:last-child{grid-column:span 2}}
/* ---------- footer ---------- */
footer{max-width:720px;margin:0 auto;padding:28px 24px 44px}
.foot-inner{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.foot-links{display:flex;gap:8px;flex-wrap:wrap}
.foot-links a{
display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);
border:1px solid var(--border);background:var(--surface);padding:8px 14px;border-radius:10px;transition:.15s;
}
.foot-links a:hover{color:var(--text);border-color:var(--faint)}
.foot-note{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--faint)}
svg.i{width:15px;height:15px;fill:currentColor;flex-shrink:0}
</style>
</head>
<body>
<header>
<nav class="nav">
<a class="brand" href="#top"><span class="dot"></span>teo</a>
<div class="nav-links">
<a href="#top">Home</a>
<a href="/blog.html">blog</a>
<a href="/cv.html">cv</a>
<a href="mailto:teo0studio@gmail.com">contact</a>
<button class="theme-btn" id="themeToggle" aria-label="Toggle theme" title="Toggle theme">◐</button>
</div>
</nav>
</header>
<main>
<!-- HERO -->
<section class="hero" id="top" style="border-bottom:1px solid var(--border)">
<div class="eyebrow">whoami</div>
<h1>Taeyoung Jeong<span style="color:var(--accent)">.</span></h1>
<p class="mono" style="color:var(--muted);font-size:12.5px;margin:-6px 0 22px;letter-spacing:.01em">@teo</p>
<p class="hero-desc">Hi, I'm <strong style="color:var(--text);font-weight:600">Taeyoung Jeong</strong> (@teo).
Currently researching <span style="color:var(--accent);font-weight:600">autonomous-driving security</span>
and <span style="color:var(--accent);font-weight:600">ROS security</span>, along with offensive security.
I'm also keeping a close eye on <span style="color:var(--accent);font-weight:600">AI for Security</span>.</p>
<div class="cta">
<a class="btn icon-btn" href="https://github.com/ttzero25" target="_blank" rel="noopener" aria-label="GitHub" title="github.com/ttzero25">
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<!-- EDUCATION -->
<section id="education">
<div class="eyebrow">education</div>
<div class="proj">
<div class="proj-item">
<div class="proj-idx" style="min-width:64px">2023—</div>
<div class="proj-body">
<h3>Soongsil University</h3>
<p>B.S. in AI Software · 2023 – present</p>
<p style="margin-top:6px"><span style="color:var(--accent)">•</span> Convergence Major in Information Security</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:64px">2026</div>
<div class="proj-body">
<h3>p4c 17th — Reversing Track 이수</h3>
<p>Jun 8 – Aug 31, 2026</p>
</div>
</div>
</div>
</section>
<!-- EXPERIENCE -->
<section id="experience">
<div class="eyebrow">experience</div>
<div class="proj">
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2026—</div>
<div class="proj-body">
<h3>Communications System Security Lab</h3>
<p>Undergraduate Researcher · Jan 5, 2026 – present</p>
<p style="margin-top:6px"><span style="color:var(--accent)">•</span> Penetration testing of two mobile apps for an undisclosed corporate client.</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2026—</div>
<div class="proj-body">
<h3>First Mind — Security Education Platform</h3>
<p>Content Review Team · 2026 – present</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2025</div>
<div class="proj-body">
<h3>개인정보 불법유통 대응 대학생 모니터링단</h3>
<p>개인정보보호위원회 · KISA 한국인터넷진흥원 · Jul 18 – Dec 22, 2025</p>
</div>
</div>
</div>
</section>
<!-- ADVISORIES -->
<section id="advisories">
<div class="eyebrow">CVE</div>
<div class="cards">
<details class="card sv-high">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-62336</span>
<span class="sev-pill">High · 8.5</span>
<span class="cvss-ver">v4.0</span>
</div>
<h3>qbee-agent — local privilege escalation & arbitrary file tampering via symlink following</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">Improper symlink handling in qbee-agent's <span class="mono">createFile</span> helper lets an
unprivileged user escalate to root — e.g. replacing their <span class="mono">.ssh</span> directory with a
symlink to <span class="mono">/root/.ssh</span> for root SSH access, corrupting system files during RAUC
staging, or redirecting file-distribution writes to seize ownership. (CWE-59 / CWE-22 / CWE-367)</p>
<div class="tgt mono">qbee-io/qbee-agent · < 2026.27 → patched 2026.27 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-62336" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/qbee-io/qbee-agent/security/advisories/GHSA-xhv5-8fpq-g7hf" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-high">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-65016</span>
<span class="sev-pill">High · 7.7</span>
<span class="cvss-ver">v4.0</span>
</div>
<h3>n8n — SSO instance-role provisioning privilege escalation to instance owner</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">n8n's Enterprise SSO fails to block assignment of the <span class="mono">global:owner</span>
role through instance-role provisioning. With <span class="mono">N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLE</span>
enabled, an SSO user whose IdP-supplied instance-role claim maps to <span class="mono">global:owner</span>
gains full instance-owner access — a capability explicitly blocked on the token-exchange path.</p>
<div class="tgt mono">n8n-io/n8n · < 2.30.1 / 2.29.8 / 1.123.64 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-65016" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-high">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-65981</span>
<span class="sev-pill">High · 7.1</span>
<span class="cvss-ver">v3.1</span>
</div>
<h3>coturn — MOBILITY-TICKET session-resume authorization bypass</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">On the ICE-mobility session-resume path, credential adoption is skipped when the
attacker's session is already authenticated, so ownership of the victim's allocation is never
re-validated — enabling cross-user takeover of an active TURN allocation. Found via an
auth-layer ↔ handler asymmetry in the STUN attribute view, then confirmed dynamically.</p>
<div class="tgt mono">coturn/coturn · ≤ 4.14.0 → patched 4.15.0 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-65981" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/coturn/coturn/security/advisories/GHSA-69wx-x7x6-pjj8" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-high">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-68553</span>
<span class="sev-pill">High · 7.1</span>
<span class="cvss-ver">v3.1</span>
</div>
<h3>coturn — format-string injection via TURN USERNAME/REALM into hiredis Redis command</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">An authenticated TURN user can inject printf-style format specifiers
(<span class="mono">%s</span>, <span class="mono">%x</span>, <span class="mono">%n</span>) through the
STUN USERNAME or REALM attributes: <span class="mono">is_secure_string()</span> blocks shell and SQL
metacharacters but never filters <span class="mono">%</span>. The tainted key is passed as a format
string to <span class="mono">redisAsyncCommand()</span> with too few variadic arguments across nine
call sites in <span class="mono">ns_ioalib_engine_impl.c</span>, reading past the
<span class="mono">va_list</span> — crashing the process (dropping all TURN sessions) or disclosing
stack memory into Redis. (CWE-134)</p>
<div class="tgt mono">coturn/coturn · hiredis backend → patched 4.13.0 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-68553" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/coturn/coturn/security/advisories/GHSA-4g7c-p5wg-j4hp" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-med">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-55828</span>
<span class="sev-pill">Medium · 6.0</span>
<span class="cvss-ver">v4.0</span>
</div>
<h3>qbee transport — symlink-chain path traversal in tar extraction</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">The <span class="mono">go.qbee.io/transport</span> tar-extraction routine validates paths
lexically but follows symlinks created during extraction, letting an attacker write a file one level
above the destination. Reached through qbee-agent running as root, it yields unauthorized
root-level file writes outside the target directory. (CWE-22 / CWE-59)</p>
<div class="tgt mono">go.qbee.io/transport · < v1.26.27 → patched v1.26.27 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-55828" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/qbee-io/transport/security/advisories/GHSA-f9m7-vc86-p6jj" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-med">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-14368</span>
<span class="sev-pill">Medium · 5.4</span>
<span class="cvss-ver">v3.1</span>
</div>
<h3>Zephyr — one-byte out-of-bounds write in LwM2M OMA-JSON string parser</h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">An off-by-one boundary check in the legacy OMA-JSON content-format reader
(<span class="mono">lwm2m_rw_json.c</span>) uses <span class="mono">></span> instead of
<span class="mono">>=</span> when validating string length against the destination buffer size.
A string whose length exactly equals the buffer is accepted, filled completely via
<span class="mono">memcpy</span>, then the NUL terminator is written one byte past the allocation.
A malicious or MITM'd LwM2M server issuing a crafted <span class="mono">Write</span> to a writable
string resource (e.g. Security Server URI, IPSO attributes) on clients built with
<span class="mono">CONFIG_LWM2M_RW_JSON_SUPPORT=y</span> corrupts adjacent static data — resource
corruption or a crash. (CWE-787 / CWE-193)</p>
<div class="tgt mono">zephyrproject-rtos/zephyr · >= 3.2.0, < 4.4.2 → patched 4.4.2 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-14368" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-vg53-h6qq-xx7h" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
<details class="card sv-med">
<summary>
<div class="sum-main">
<div class="card-top">
<span class="cve-id">CVE-2026-71325</span>
<span class="sev-pill">Medium · 4.8</span>
<span class="cvss-ver">v4.0</span>
</div>
<h3>Traefik — <span class="mono">allowCrossNamespace=false</span> bypass via <span class="mono">@kubernetescrd</span></h3>
</div>
<span class="chev">›</span>
</summary>
<div class="card-body">
<p class="desc">A tenant restricted to a single namespace can reference another namespace's
TraefikService through the <span class="mono">@kubernetescrd</span> provider's backendRef,
defeating the intended cross-namespace isolation. An unpatched sibling of the earlier
CVE-2026-41174 / 54761 fixes.</p>
<div class="tgt mono">traefik/traefik · ≤ 3.7.9 → patched 3.7.10 / 3.6.25 / 2.11.54 · CVSS:4.0/AV:L/AC:L/PR:L/UI:N/VC:L/VI:L/SC:L/SI:L</div>
<div class="adv-links">
<a href="https://nvd.nist.gov/vuln/detail/CVE-2026-71325" target="_blank" rel="noopener">NVD ↗</a>
<a href="https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmq" target="_blank" rel="noopener">GitHub Advisory ↗</a>
</div>
</div>
</details>
</div>
</section>
<!-- HALL OF FAME & AWARDS -->
<section id="hall-of-fame">
<div class="eyebrow">hall of fame & awards</div>
<div class="cards">
<a class="card sv-brand link-card" href="https://docs.qbee.io/security-vulnerability-disclosure-policy.html" target="_blank" rel="noopener">
<div class="sum-main">
<div class="card-top">
<span class="cve-id">qbee.io</span>
<span class="sev-pill">Hall of Fame</span>
</div>
<h3>Recognized in qbee's Hall of Fame for 3 reported vulnerabilities</h3>
</div>
<span class="chev">↗</span>
</a>
<div class="card sv-award award-card">
<div class="sum-main">
<div class="card-top">
<span class="cve-id">Award · 우수</span>
</div>
<h3>2025 개인정보 불법유통 대응 대학생 모니터링단</h3>
<div class="talk-meta">
<span>개인정보보호위원회 · KISA 한국인터넷진흥원</span>
<span class="sep">·</span>
<span>Dec 22, 2025</span>
</div>
</div>
<span class="medal">🏅</span>
</div>
</div>
</section>
<!-- PROJECTS -->
<section id="projects">
<div class="eyebrow">projects</div>
<div class="proj">
<div class="proj-item">
<div class="proj-idx">01</div>
<div class="proj-body">
<h3>DeepSealer <span class="tag">0-day agent</span></h3>
<p>An open-source 0-day research agent. A multi-stage, 5-agent pipeline
(Recon → Analyzer → Defender → Judgement → PoC-Validator) that finds and
<em style="font-style:normal;color:var(--accent);font-weight:600">dynamically reproduces</em>
vulnerabilities in open-source repos — a finding is reported only after its exploit
actually fires.</p>
</div>
</div>
</div>
</section>
<!-- CTF -->
<section id="ctf">
<div class="eyebrow">CTF</div>
<div class="proj">
<div class="proj-item">
<div class="proj-body" style="flex:1;display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap">
<h3 style="margin-bottom:0">HyperSonic CTF</h3>
<span class="mono" style="font-size:11px;color:var(--muted);white-space:nowrap">2nd · ASC</span>
</div>
</div>
</div>
</section>
<!-- SPEAKER -->
<section id="speaker">
<div class="eyebrow">speaker</div>
<div class="proj">
<a class="proj-item" href="https://hackingcamp.org/" target="_blank" rel="noopener">
<div class="proj-idx">01</div>
<div class="proj-body">
<h3>AI for Security for AI</h3>
<p>AI 에이전트로 AI 에이전트 해킹하기</p>
<p class="speakers">Seokjun Ryu & <strong>Taeyoung Jeong</strong></p>
<div class="talk-meta">
<span class="ev">HackingCamp 33rd</span>
<span class="sep">·</span>
<span>Aug 23, 2026</span>
</div>
</div>
</a>
</div>
</section>
<!-- ETC -->
<section id="etc" style="border-bottom:none">
<div class="eyebrow">etc</div>
<div class="proj">
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2024</div>
<div class="proj-body">
<h3>제64대 중앙운영위원회 위원</h3>
<p>숭실대학교 · Jan 1 – Jun 30, 2024</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2024</div>
<div class="proj-body">
<h3>등록금심의위원회 학생위원</h3>
<p>숭실대학교 · 2024</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2023–24</div>
<div class="proj-body">
<h3>융합특성화자유전공학부 제6대 학생회장</h3>
<p>숭실대학교 · Jul 1, 2023 – Jun 30, 2024</p>
</div>
</div>
<div class="proj-item">
<div class="proj-idx" style="min-width:70px">2023</div>
<div class="proj-body">
<h3>제63대 중앙운영위원회 위원</h3>
<p>숭실대학교 · Jul 1 – Dec 31, 2023</p>
</div>
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