Add vpatch-CVE-2026-0257 rule and test

.appsec-tests/vpatch-CVE-2026-0257/CVE-2026-0257.yaml

@@ -0,0 +1,18 @@
+## autogenerated on 2026-06-24 14:02:03
+id: CVE-2026-0257
+info:
+  name: CVE-2026-0257
+  author: crowdsec
+  severity: info
+  description: CVE-2026-0257 testing
+  tags: appsec-testing
+http:
+  - method: GET
+    path:
+      - "{{BaseURL}}/global-protect/login.esp"
+      - "{{BaseURL}}/sslmgr"
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2026-0257/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2026-06-24 14:02:03
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2026-0257.yaml
+nuclei_template: CVE-2026-0257.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2026-0257.yaml

@@ -0,0 +1,32 @@
+## autogenerated on 2026-06-24 14:02:03
+name: crowdsecurity/vpatch-CVE-2026-0257
+description: 'Detects authentication bypass attempts against Palo Alto Networks PAN-OS GlobalProtect portal and gateway.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: contains
+          value: /global-protect/login.esp
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: contains
+          value: /sslmgr
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'PAN-OS GlobalProtect - Authentication Bypass'
+  classification:
+    - cve.CVE-2026-0257
+    - attack.T1190
+    - cwe.CWE-565

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -118,6 +118,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2025-31161
 - crowdsecurity/vpatch-CVE-2025-31324
 - crowdsecurity/vpatch-CVE-2025-29306
+- crowdsecurity/vpatch-CVE-2026-0257
 - crowdsecurity/vpatch-CVE-2025-49113
 - crowdsecurity/appsec-generic-test
 - crowdsecurity/vpatch-CVE-2025-25257