diff --git a/SECURITY.md b/SECURITY.md
index e32ca8208adf87..ab5fc4a14732d9 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -142,6 +142,25 @@ are not ready for public consumption and may have incomplete implementations,
 missing security hardening, or other limitations that make them unsuitable
 for production use.
 
+### V8 flags
+
+Node.js may expose V8 features that are controlled by V8 command-line flags
+(e.g., `--harmony-optional-chaining`, `--max_old_space_size`). These flags
+enable or modify V8-level JavaScript engine behavior that is not part of the
+ECMAScript specification that Node.js implements and is not part of the
+Node.js documented API surface.
+
+* Security vulnerabilities that can only be triggered via V8 flags
+  will **not** be accepted as valid security issues.
+* Any issues with these features will be treated as normal bugs.
+* No CVEs will be issued for issues that only affect V8 flag features.
+* Bug bounty rewards are not available for V8 flag feature issues.
+
+This policy recognizes that V8 flags expose internal V8 engine options that
+are not part of the Node.js documented API surface, are not enabled by
+default in production builds, and may have incomplete implementations or
+missing security hardening.
+
 ### What constitutes a vulnerability
 
 Being able to cause the following through control of the elements that Node.js