CVE-2026-7768
CVE-2026-7768 · @fastify/accepts-serializer vulnerable to Denial of Service via Unbounded Accept Header Cache Growth
This page contains facts from public vulnerability sources. Check the original advisory before updating.
@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 Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option.
CVSS 7.5 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
@fastify/accepts-serializer
- Versions
- ≥ 0, < 6.0.4: Affected (semver)
- 6.0.4: Not affected (semver)
Update to 6.0.4
@fastify/accepts-serializer npm
- Affected ranges
- SEMVER: < 6.0.4
Update to 6.0.4