CVE-2026-34079
Received Received - Intake
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
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 Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory.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.
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Meta Information
Published
2026-04-07
Last Modified
2026-04-17
Generated
2026-06-16
AI Q&A
2026-04-08
EPSS Evaluated
2026-06-14
NVD
CVE-2026-34079
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
flatpak flatpak to 1.16.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Executive Summary

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 Before version 1.16.4, the caching mechanism for ld.so (the dynamic linker/loader) removes outdated cache files without properly verifying that the path to the outdated cache is within the cache directory controlled by the app.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.

Impact Analysis

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.

Mitigation Strategies

To mitigate this vulnerability, you should update Flatpak to version 1.16.4 or later, where the issue has been fixed.

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