CVE-2026-89313

JwksTrustStore.Get returns the last fetched JWKS key (err=nil) when the requested kid is absent, instead of nil

State: Published
Severity: 6.3 Medium
Published: Oct 23, 2026
Updated: Oct 23, 2026
Reserved: Sep 11, 2026

Description

`JwksTrustStore.Get` assigned each parsed key to the function's **named return value** while refreshing the JWKS cache. When the requested `kid` was not present, the trailing naked `return` handed the caller the last key in the JWKS document together with a `nil` error — a confidently wrong answer instead of "not found".

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	eclipse

Weaknesses

CWE-706 Use of Incorrectly-Resolved Name or Reference

Affected Products

Product	Versions
Eclipse KeyPont - GOSEEclipse Foundation	0.7.5 through 0.13.0-rc1Affected
Eclipse KeyPont - GOSEEclipse Foundation	before 1.0.0-rc4Affected

References

https://github.com/eclipse-keypont/gose/security/advisories/GHSA-v7r8-g6h9-99vv

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