CVSS 7.8 (high) · published 2026-09-17
A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder.
Weakness: CWE-94
Source: NVD CVE-2026-86320
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