CVE-2026-7768
High · 7.5CVSS
7.5
EPSS
0.5%
Published
May 4, 2026
CISA due date
—
The record
@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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @fastify/accepts-serializer | 0 | 6.0.4 |
Related vulnerabilities
- GHSA-qxhc-wx3p-2wmg @fastify/accepts-serializer Vulnerable to Denial of Service via Unbounded Accept Header… Same vulnerability
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- CVE-2026-114723 Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the ImageMagick resource… CWE-770
- CVE-2026-113811 Algorithm::UrataniTakeda versions from 0.1.5 before 0.1.7 for Perl allow memory… CWE-770
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- CVE-2026-112400 Pillow is a Python imaging library. CWE-770