Improper Check for Unusual or Exceptional Conditions Affecting cosign-fips package, versions <3.0.6-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.24% (15th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-COSIGNFIPS-18008183
  • published18 Jul 2026
  • disclosed7 Apr 2026

Introduced: 7 Apr 2026

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

How to fix?

Upgrade Minimos:latest cosign-fips to version 3.0.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cosign-fips package and not the cosign-fips package as distributed by Minimos. See How to fix? for Minimos:latest 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