CVE-2026-7768
high@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy.
Vendor / product: Fastify — fastify\/accepts-serializer
@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
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (ce714d77-add3-4f53-aff5-83d477b104bb)
Timeline (UTC)
Published: 2026-05-04 20:16
Modified: 2026-11-11 23:10
NVD status: Analyzed
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:13 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
fastify / fastify\/accepts-serializer <6.0.4
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://cna.openjsf.org/security-advisories.html
References
- https://cna.openjsf.org/security-advisories.html ce714d77-add3-4f53-aff5-83d477b104bb
- https://github.com/fastify/fastify-accepts-serializer/security/advisories/GHSA-qxhc-wx3p-2... ce714d77-add3-4f53-aff5-83d477b104bb
Data sources
NVD CVE API 2.0 — fetched 2026-11-11 23:13 UTC · record ↗