CVE-2026-96282

Flatpak: flatpak: extension metadata path traversal file existence oracle

State: Published
Severity: 3.1 Low
Published: Sep 27, 2026
Updated: Sep 28, 2026
Reserved: Sep 22, 2026

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.

Scores

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

Weaknesses

CWE-59 Improper Link Resolution Before File Access ('Link Following')

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat

References

https://access.redhat.com/security/cve/CVE-2026-96282vdb-entry
RHBZ#2539422issue-tracking
https://github.com/flatpak/flatpak/security/advisories/GHSA-w69g-9x8j-7p8f

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