CVE-2026-7768

@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the...

GHSA-QXHC-WX3P-2WMG @fastify/accepts-serializer Vulnerable to Denial of Service via Unbounded Accept Header Cache Growth

Impact @fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded. Under sustained load,...

CVE-2026-7768

The CVE affects @fastify/accepts-serializer where serializer-selection results are cached by the request Accept header without bounds or eviction, allowing an unauthenticated remote client to cause unbounded cache growth and Node.js heap exhaustion leading to a crash. Affected versions are