CVE-2026-24846malcontent's archive extraction could write outside extraction directory

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/chainguard-dev/malcontent/security/advisories/GHSA-923j-vrcg-hxwh Vendor Advisory
• https://github.com/chainguard-dev/malcontent/commit/259fca5abc004f3ab238895463ef280a87f30e96 Patch
• https://github.com/chainguard-dev/malcontent/commit/a7dd8a5328ddbaf235568437813efa7591e00017 Patch