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CVE-2026-7768

@fastify/accepts-serializer vulnerable to Denial of Service via Unbounded Accept Header Cache Growth PUBLISHED

Description (CNA)

@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.

Affected (CNA)

Vendor / productVersions
@fastify/accepts-serializer / @fastify/accepts-serializeraffected 0 before 6.0.4; unaffected 6.0.4

CWE

CWE-770

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.