CVE-2026-86320
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.
- Score
- CVSS 3.1 7.8 High
- Status
- Awaiting Analysis - secalert@redhat.com
- Published
- 2026-09-17
- Last modified
- 2026-10-28
- Weaknesses
- CWE-94
Affected products
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Rhel Aus (Redhat)
- Rhel E4s (Redhat)
- Rhel Eus (Redhat)
- Rhel Eus Long Life (Redhat)
- Rhel Tus (Redhat)
References
- https://access.redhat.com/errata/RHSA-2026:80495
- https://access.redhat.com/errata/RHSA-2026:80496
- https://access.redhat.com/errata/RHSA-2026:80973
- https://access.redhat.com/errata/RHSA-2026:84832
- https://access.redhat.com/errata/RHSA-2026:84833
- https://access.redhat.com/errata/RHSA-2026:84834
- https://access.redhat.com/errata/RHSA-2026:84842
- https://access.redhat.com/errata/RHSA-2026:86714
- https://access.redhat.com/errata/RHSA-2026:90896
- https://access.redhat.com/security/cve/CVE-2026-86320
- https://bugzilla.redhat.com/show_bug.cgi?id=2471023
- https://github.com/flatpak/flatpak-builder/security/advisories/GHSA-j5p8-jgjc-f3xv
