CVEvulnerability
CVE-2026-96275
8.8 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-23
- Last modified
- 2026-10-27
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-22
Description
A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://access.redhat.com/errata/RHSA-2026:80497 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:80498 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:80687 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:89733 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:90364 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2026-96275 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2539416 bugzilla.redhat.com
- https://github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg github.com