CVE-2026-34078

N/A

Description

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 in the sandbox. This gives apps access to all host files and can be used as a primitive to gain code execution in the host context. This vulnerability is fixed in 1.16.4.

CVE Details

CVSS v3.1 ScoreN/A

Published4/7/2026

Last Modified4/11/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-61

References

https://github.com/flatpak/flatpak/security/advisories/GHSA-cc2q-qc34-jprg(security-advisories@github.com)

http://www.openwall.com/lists/oss-security/2026/04/09/8(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2026/04/10/14(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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