CVE-2026-96282

LOW 3.1

Flatpak: flatpak: extension metadata path traversal file existence oracle

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-59
Vendor	red hat
Product	red hat enterprise linux 10
Published	Sep 27, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Upstream acknowledges Sebastian Wick as the original reporter.