CVE-2026-96275
Flatpak: flatpak: arbitrary write access as root via extra-data extraction
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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 | Sep 23, 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 7
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
Upstream acknowledges Sebastian Wick as the original reporter.