CVE-2026-25143: melange affected by potential host command execution via license-check YAML mode patch pipeline

CVE-2026-25143 · Severity: low · CVSS 3.1 · Published 2026-02-05

melange affected by potential host command execution via license-check YAML mode patch pipeline in chainguard.dev/melange

Technologies: chainguard.dev/melange (Go). Vendors: Go.

Quick answers

Is CVE-2026-25143 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-25143 being exploited in the wild.
How severe is CVE-2026-25143?
Low severity, with a CVSS score of 3.1, published 5 February 2026.
Which products and versions are affected?
chainguard.dev/melange (Go) SEMVER:introduced=0.10.0,fixed=0.40.3.
Is there a fix for CVE-2026-25143?
Yes. chainguard.dev/melange (Go): upgrade to 0.40.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-25143?
Check whether you run chainguard.dev/melange (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • chainguard.dev/melange (Go): upgrade to 0.40.3 or later
    go get chainguard.dev/melange@v0.40.3

Affected products

  • chainguard.dev/melange (Go) SEMVER:introduced=0.10.0,fixed=0.40.3

Identifiers

  • CVE-2026-25143
  • GHSA-rf4g-89h5-crcr
  • GO-2026-4412

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