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.
References
| Link | Resource |
|---|---|
| https://github.com/flatpak/flatpak/security/advisories/GHSA-cc2q-qc34-jprg | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/09/8 | Third Party Advisory Mailing List |
| http://www.openwall.com/lists/oss-security/2026/04/10/14 | Mailing List Third Party Advisory |
Configurations
History
24 Apr 2026, 17:50
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 10.0 |
| First Time |
Flatpak
Flatpak flatpak |
|
| References | () 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 - Third Party Advisory, Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2026/04/10/14 - Mailing List, Third Party Advisory |
11 Apr 2026, 01:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
09 Apr 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
07 Apr 2026, 22:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-07 22:16
Updated : 2026-04-24 17:50
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