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CVE-2026-89313

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

MEDIUM
6.3
CVSS Score
Published: October 23, 2026 at 08:40 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 0.2%

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".

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-v7r8-g6h9-99vv

CVSS

6.3MEDIUMeclipse
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-706

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