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CVE-2026-96281 Details

Description

On a multi-user system, a user with an active local login session could downgrade a system-wide Flatpak app to an older version by removing the app's remote ref via the unprivileged system-helper RemoveLocalRef method, causing the anti-downgrade check to fail to find a reference date. A malicious local user could use this to expose other users of the same system to an app version with unfixed vulnerabilities.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.2 MEDIUMVector:CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-96281	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2539421	[email protected]
https://github.com/flatpak/flatpak/security/advisories/GHSA-q4gr-vc25-57m5	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-284	Improper Access Control	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 27, 2026	CVE Modified	[email protected]
Sep 27, 2026	New CVE Received	[email protected]