CVE-2026-34078

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*

History

06 Jul 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:35843 -

30 Jun 2026, 03:18

Type Values Removed Values Added
CWE CWE-59
References
  • () https://access.redhat.com/errata/RHSA-2026:21755 -
  • () https://access.redhat.com/errata/RHSA-2026:21756 -
  • () https://access.redhat.com/errata/RHSA-2026:21757 -
  • () https://access.redhat.com/errata/RHSA-2026:23417 -
  • () https://access.redhat.com/errata/RHSA-2026:23418 -
  • () https://access.redhat.com/errata/RHSA-2026:23419 -
  • () https://access.redhat.com/errata/RHSA-2026:23420 -
  • () https://access.redhat.com/errata/RHSA-2026:25068 -
  • () https://access.redhat.com/errata/RHSA-2026:25381 -
  • () https://access.redhat.com/errata/RHSA-2026:30901 -
  • () https://access.redhat.com/security/cve/CVE-2026-34078 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2456276 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34078.json -

17 Jun 2026, 10:38

Type Values Removed Values Added
References () http://www.openwall.com/lists/oss-security/2026/04/09/8 - Third Party Advisory, Mailing List () http://www.openwall.com/lists/oss-security/2026/04/09/8 - Mailing List, Third Party Advisory

24 Apr 2026, 17:50

Type Values Removed Values Added
References () https://github.com/flatpak/flatpak/security/advisories/GHSA-cc2q-qc34-jprg - () https://github.com/flatpak/flatpak/security/advisories/GHSA-cc2q-qc34-jprg - Vendor Advisory
References () http://www.openwall.com/lists/oss-security/2026/04/09/8 - () http://www.openwall.com/lists/oss-security/2026/04/09/8 - Third Party Advisory, Mailing List
References () http://www.openwall.com/lists/oss-security/2026/04/10/14 - () http://www.openwall.com/lists/oss-security/2026/04/10/14 - Mailing List, Third Party Advisory
CPE cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 10.0
First Time Flatpak
Flatpak flatpak

11 Apr 2026, 01:16

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/04/10/14 -

09 Apr 2026, 11:16

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/04/09/8 -

07 Apr 2026, 22:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-07 22:16

Updated : 2026-07-15 02:20


NVD link : CVE-2026-34078

Mitre link : CVE-2026-34078

CVE.ORG link : CVE-2026-34078


JSON object : View

Products Affected

flatpak

  • flatpak
CWE
CWE-61

UNIX Symbolic Link (Symlink) Following

CWE-59

Improper Link Resolution Before File Access ('Link Following')