What’s Vulnerable › Vulnerabilities
CVE-2026-34079: Flatpak affected by arbitrary file deletion on the host filesystem
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-07 · updated 2026-07-24
- Weakness: CWE-22
Description
Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory. This allows Flatpak apps to delete arbitrary files on the host. This vulnerability is fixed in 1.16.4.
Affected products
- flatpak: before 1.16.4 — fixed in 1.16.4
How to fix
Upgrade to a fixed version: flatpak 1.16.4. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-34079 or the next vulnerability affects your stack