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Medium · 6.3 CVE-2026-89317 EUVD-2026-108649

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

Published Oct 23, 2026 · Updated Nov 2, 2026 · Assigned by eclipse

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 products

VendorProductAffectedFixed
Eclipse Foundation Eclipse KeyPont - GOSE 0.7.3 – ≤ 0.13.0-rc1, < 1.0.0-rc4 1.0.0-rc4

References