Vulnerability in Chainguard Malcontent
CVE-2026-24845
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.
EPSS: 0.003 (27.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Chainguard Malcontent
- Chainguard-dev Malcontent — versions >= 0.10.0, < 1.20.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-24845?
- CVE-2026-24845 is a medium-severity vulnerability in Chainguard Malcontent, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-01-29.
- How severe is CVE-2026-24845?
- Medium severity. CVSS v3 base score is 6.5 out of 10.