Quick answers
- Is CVE-2026-96275 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96275 being exploited in the wild.
- How severe is CVE-2026-96275?
- High severity, with a CVSS score of 8.8, published 23 September 2026.
- Which products and versions are affected?
- Flatpak Flatpak.
- Is there a fix for CVE-2026-96275?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-96275 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-96275?
- Check whether you run Flatpak. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability combines two path traversal issues in extract_extra_data(): symlink-following in `files/extra` path resolution and unsanitized `..` sequences in blob names from `xa.extra-data-sources`. An attacker controlling a Flatpak repository can exploit this to write arbitrary files as root on system-wide installs. User interaction is required (adding the malicious remote and initiating an install/update), but no privileges are needed on the victim host.
Affected products
- Flatpak Flatpak
Timeline
- 2026-09-23: disclosed