Improper Certificate Validation Affecting localstack package, versions <4.13.1-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.29% (22nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LOCALSTACK-15230515
  • published6 Feb 2026
  • disclosed3 Dec 2025

Introduced: 3 Dec 2025

CVE-2025-61727  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Chainguard localstack to version 4.13.1-r0 or higher.

NVD Description

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

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.

CVSS Base Scores

version 3.1