CVE-2026-96275
Flatpak: flatpak: arbitrary write access as root via extra-data extraction
CVSS Score
8.8
EPSS Score
0.6%
EPSS Percentile
47th
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.
| CWE | CWE-22 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Sep 23, 2026 |
| Last Updated | Nov 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
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 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected References
access.redhat.com: 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/errata/RHSA-2026:92221 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:92369 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:95493 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-96275 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2539416 github.com: https://github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg
Credits
Upstream acknowledges Sebastian Wick as the original reporter.