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CVE-2026-24846

malcontent's archive extraction could write outside extraction directory

malcontent discovers supply-chain compromises through. context, differential analysis, and YARA. Starting in version 1.8.0 and prior to version 1.20.3, malcontent could be made to create symlinks outside the intended extraction directory when scanning a specially crafted tar or deb archive. The `handleSymlink` function received arguments in the wrong order, causing the symlink target to be used as the symlink location. Additionally, symlink targets were not validated to ensure they resolved within the extraction directory. Version 1.20.3 introduces fixes that swap handleSymlink arguments, validate symlink location, and validate symlink targets that resolve within an extraction directory.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Chainguard Chainguard-dev
Products
Malcontent Malcontent
CVE-2026-24845

malcontent's OCI image scanning could expose registry credentials

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Chainguard Chainguard-dev
Products
Malcontent Malcontent
CVE-2026-28407

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

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.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Chainguard Chainguard-dev
Products
Malcontent Malcontent