Reachable Assertion Affecting cosign-fips package, versions <3.0.4-r3


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.02% (7th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-COSIGNFIPS-15236004
  • published6 Feb 2026
  • disclosed22 Jan 2026

Introduced: 22 Jan 2026

CVE-2026-23991  (opens in a new tab)
CWE-617  (opens in a new tab)
CWE-754  (opens in a new tab)

How to fix?

Upgrade Chainguard cosign-fips to version 3.0.4-r3 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 Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, if the TUF repository (or any of its mirrors) returns invalid TUF metadata JSON (valid JSON but not well formed TUF metadata), the client will panic during parsing, causing a denial of service. The panic happens before any signature is validated. This means that a compromised repository/mirror/cache can DoS clients without having access to any signing key. Version 2.3.1 fixes the issue. No known workarounds are available.

CVSS Base Scores

version 3.1