CVE-2026-96279

MEDIUM 6.5

Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as /etc/shadow.

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

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

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-2026-96279 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2539417 github.com: https://github.com/flatpak/flatpak/security/advisories/GHSA-9rww-v4mm-x4jg

Credits

Upstream acknowledges Sebastian Wick as the original reporter.