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Signals Exploited in the wild (KEV) 0 Patch available 1 No fix listed 0 Has CVE 1

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Weakness (CWE) CWE-347 Improper Verification of Cryptographic Signature 1

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Vendor: @fastify/secure-session × Clear all filters

TI-2026-83784 CVE-2026-117549

@fastify/secure-session signature bypass via cookie signature removal

Priority LOW 18

@fastify/secure-session is a session plugin for Fastify that stores an encrypted session in a cookie.

CVSS 3.1MEDIUM 4.2· Network · Low privileges · No interaction · EPSS 0.00075 · Published 2026-11-02 · Fixed in 8.4.2 CWE-347

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