Vulnerability DatabaseCVE-2026-96282
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CVE-2026-96282
Published:September 27, 2026
Updated:October 10, 2026
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.
Affected Packages
https://github.com/flatpak/flatpak.git (GITHUB):
Affected version(s) >=0.1 <1.18.1
Fix Suggestion:
Update to version 1.18.1
Related Resources (3)
https://github.com/flatpak/flatpak/security/advisories/GHSA-w69g-9x8j-7p8f
https://bugzilla.redhat.com/show_bug.cgi?id=2539422
https://access.redhat.com/security/cve/CVE-2026-96282
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CVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')
CWE-59
EPSS
Base Score:
0.33