CVE-2026-86320
Flatpak-builder: host code execution via `git am` hook execution in patch source extraction (`use-git-am`)
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Sep 17, 2026 |
| Last Updated | Sep 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
Credits
Red Hat would like to thank AISLE Research for reporting this issue.