CVE-2026-24845: Chainguard Malcontent

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

malcontent discovers supply-chain compromises through. context, differential analysis, and YARA. Starting in version 0.10.0 and prior to version 1.20.3, malcontent could be made to expose Docker registry credentials if it scanned a specially crafted OCI image reference. malcontent uses google/go-containerregistry for OCI image pulls, which by default uses the Docker credential keychain. A malicious registry could return a `WWW-Authenticate` header redirecting token authentication to an attacker-controlled endpoint, causing credentials to be sent to that endpoint. Version 1.20.3 fixes the issue by defaulting to anonymous auth for OCI pulls.

Affected products

• Chainguard Malcontent: from 0.1.0, before 1.20.3 (fixed in 1.20.3)

Published 2026-01-29. Last modified 2026-06-17.