CVE-2026-34078

high Red Hat
CVSS v3 Base Score
9.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 82% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: April 7, 2026 (93 days ago)
Last Modified: April 7, 2026
Vendor: Red Hat
Source: REDHAT

Description

Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the Flatpak portal accepts paths in the sandbox-expose options which can be app-controlled symlinks pointing at arbitrary paths. Flatpak run mounts the resolved host path in the sandbox. This gives apps access to all host files and can be used as a primitive to gain code execution in the host context. This vulnerability is fixed in 1.16.4.

CWE

CWE-59

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com