CVE-2026-28407

malcontent is software for discovering supply-chain compromises through context, differential analysis, and YARA. Prior to version 1.21.0, malcontent would remove nested archives which failed to extract which could potentially leave malicious content. A better approach is to preserve these archives so that malcontent can attempt a best-effort scan of the archive bytes. Version 1.21.0 fixes the issue.

Score

CVSS 4.0 6.9 Medium

Status

Analyzed - security-advisories@github.com

Published

2026-02-27

Last modified

2026-03-02

Weaknesses

CWE-703

Affected products

• Malcontent (Chainguard)
• Malcontent (Chainguard-dev)

References

• https://github.com/chainguard-dev/malcontent/commit/356c56659ccfcad0b249a97de8cf71f151ed3ee9
• https://github.com/chainguard-dev/malcontent/pull/1383
• https://github.com/chainguard-dev/malcontent/security/advisories/GHSA-945p-3jhm-6rcp