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.
History

Mon, 28 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Flatpak
Flatpak flatpak
Vendors & Products Flatpak
Flatpak flatpak

Mon, 28 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 27 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title Flatpak: flatpak: extension metadata path traversal file existence oracle
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-59
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-09-27T21:53:43.645Z

Updated: 2026-09-28T12:58:34.403Z

Reserved: 2026-09-22T20:43:56.596Z

Link: CVE-2026-96282

cve-icon Vulnrichment

Updated: 2026-09-28T12:58:29.027Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-27T22:17:06.430

Modified: 2026-09-29T21:29:07.663

Link: CVE-2026-96282

cve-icon Redhat

No data.