CVE-2026-34079
Arbitrary File Deletion in Flatpak ld.so Cache Prior to
Publication date: 2026-04-07
Last updated on: 2026-04-17
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| flatpak | flatpak | to 1.16.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-22 | The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Flatpak, a Linux application sandboxing and distribution framework. Before version 1.16.4, the caching mechanism for ld.so (the dynamic linker/loader) removes outdated cache files without properly verifying that the path to the outdated cache is within the cache directory controlled by the app. Because of this improper check, Flatpak applications can delete arbitrary files on the host system.
How can this vulnerability impact me? :
This vulnerability allows Flatpak applications to delete arbitrary files on the host system. This can lead to loss of important data, disruption of system services, or potential system instability depending on which files are deleted.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update Flatpak to version 1.16.4 or later, where the issue has been fixed.