HIGH 8.8 NVD
CVE-2026-96275
A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On s
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.
References
- https://access.redhat.com/security/cve/CVE-2026-96275
- https://bugzilla.redhat.com/show_bug.cgi?id=2539416
- https://github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg
This high severity vulnerability with a CVSS score of 8.8 was published on 2026-09-23 via NVD.
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