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CVE-2026-89317

JwtVerifierImpl.Verify does not enforce the JWS `crit` header (RFC 7515 §4.1.11)

MEDIUM
6.3
CVSS Score
Published: October 23, 2026 at 08:50 AM UTC
Updated: October 23, 2026 at 07:30 PM UTC
1 product affected across 1 vendorEclipse KeyPont - GOSE

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.1%

Description

gose parsed the JWS `crit` header into `JwsHeader.Crit` and then never read it. RFC 7515 §4.1.11 requires a recipient to reject a JWS whose listed critical extension parameters it does not understand. gose implements no header extensions, so every token carrying a non-empty `crit` should have been rejected — and none were.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/eclipse-keypont/gose/security/advisories/GHSA-445r-fpvv-hgwc

CVSS

6.3MEDIUMeclipse
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20CWE-347CWE-1288

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