CVE-2026-96282

low

Description

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at unintended locations inside the sandbox.

References

https://github.com/flatpak/flatpak/security/advisories/GHSA-w69g-9x8j-7p8f

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88044

https://bugzilla.redhat.com/show_bug.cgi?id=2539422

https://access.redhat.com/security/cve/CVE-2026-96282

Details

Source: Mitre, NVD

Published: 2026-09-27

Updated: 2026-09-29

Risk Information

CVSS v2

Base Score: 5.2

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 3.1

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Severity: Low

EPSS

EPSS: 0.00329