Medium severity · published Oct 23, 2026
CVE-2026-89313
JwksTrustStore.Get returns the last fetched JWKS key (err=nil) when the requested kid is absent, instead of nil
New
6.3
CVSS
0.2%
EPSS
No
On KEV
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".
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EK
Eclipse KeyPont - GOSE · Eclipse Foundation
0.7.5 through 0.13.0-rc1; before 1.0.0-rc4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89313
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89313
github.com
https://github.com/eclipse-keypont/gose/security/advisories/GHSA-v7r8-g6h9-99vv
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