Improper Check for Unusual or Exceptional Conditions Affecting cosign package, versions <3.0.6-150400.3.42.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.24% (15th percentile)

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  • Snyk IDSNYK-SLES157-COSIGN-17320033
  • published12 Jun 2026
  • disclosed11 Jun 2026

Introduced: 11 Jun 2026

CVE-2026-39395  (opens in a new tab)
CWE-754  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 cosign to version 3.0.6-150400.3.42.1 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:15.7 relevant fixed versions and status.

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures, this was due to a logic flaw in the error handling of the predicate type validation. For new-format bundles, the predicate type validation was bypassed completely. This vulnerability is fixed in 3.0.6 and 2.6.3.

CVSS Base Scores

version 3.1