Summary
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.
Security Fix(es):
* flatpak: Flatpak: Arbitrary code execution via crafted symlinks in sandbox-expose options (CVE-2026-34078)
* flatpak: Flatpak: Arbitrary file deletion on host via improper cache file path validation (CVE-2026-34079)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | flatpak | 0:1.12.9-4.el9_8.1 |
Vulnerabilities 2
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Critical 9.3
Flatpak has a complete sandbox escape leading to host file access and code execution in the host context
Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the Flatpak portal accepts paths in the sandbox-expose options which can be app-controlled symlinks pointing at arbitrary paths. Flatpak run mounts the resolved host path i…
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High 8.7
Flatpak affected by arbitrary file deletion on the host filesystem
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 Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory.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 Flatp…