RCE in Red Hat Enterprise Linux 10
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.
Vulnerability class: RCE (Remote Code Execution)
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2026-86320?
- CVE-2026-86320 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Code Injection. CVSS score: 7.8/10. Published 2026-09-17.
- How severe is CVE-2026-86320?
- High severity. CVSS v3 base score is 7.8 out of 10.