Improper Certificate Validation Affecting cosign package, versions <3.1.1-150400.3.45.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.39% (32nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES155-COSIGN-17949298
  • published11 Jul 2026
  • disclosed9 Jul 2026

Introduced: 9 Jul 2026

NewCVE-2026-39835  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 cosign to version 3.1.1-150400.3.45.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cosign package and not the cosign package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

CVSS Base Scores

version 3.1