CVE-2026-96282

Severity CVSS v4.0:

Pending analysis

Type:

CWE-59 Link Following

Publication date:

27/09/2026

Last modified:

28/09/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 3.10 LOW
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x

3.10

Severity 3.x

LOW

References to Advisories, Solutions, and Tools

https://access.redhat.com/security/cve/CVE-2026-96282
https://bugzilla.redhat.com/show_bug.cgi?id=2539422
https://github.com/flatpak/flatpak/security/advisories/GHSA-w69g-9x8j-7p8f