CVE-2026-28407

MEDIUM6.9

malcontent's nested archive extraction failure can drop content from scan inputs

Published Feb 27, 2026

Modified 2 days ago

Details

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.

References

WEB

https://github.com/chainguard-dev/malcontent/commit/356c56659ccfcad0b249a97de8cf71f151ed3ee9

WEB

https://github.com/chainguard-dev/malcontent/pull/1383

WEB

https://github.com/chainguard-dev/malcontent/security/advisories/GHSA-945p-3jhm-6rcp

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-28407

CVSS Analysis

CVSS v4.0

6.9