---
id: CVE-2026-96282
title: >-
  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
summary: >-
  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,
  unval…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-59
vendor: Red Hat
product: flatpak
affected:
  - flatpak (all versions)
  - flatpak (all versions)
  - flatpak (all versions)
  - flatpak (all versions)
published: '2026-09-27'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T21:29:07.663'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96282'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-96282'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2539422'
    label: secalert@redhat.com
  - url: 'https://github.com/flatpak/flatpak/security/advisories/GHSA-w69g-9x8j-7p8f'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96282.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-96282'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96282'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00239
epssPercentile: 0.14897
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-28T12:58:23.772794Z'
ingestedAt: '2026-09-27T22:59:18.877Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-27 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96282.json)