CVE-2026-34078
flatpak: Flatpak is a Linux application sandboxing and distribution framework
CVE-2026-34078 is fixed in 13 products on 1 platform, first by flatpak 1.6.5-0ubuntu0.5+esm1, released April 7, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
10.0
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0171
77th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| flatpak · Debian 12.15 (bookworm) | 1.14.10-1~deb12u2 | DEBIAN-CVE-2026-34078 | Apr 7, 2026 |
| flatpak · Debian 13.5 (trixie) | 1.16.6-1~deb13u1 | DEBIAN-CVE-2026-34078 | Apr 7, 2026 |
| flatpak · Debian 14 | 1.16.4-1 | DEBIAN-CVE-2026-34078 | Apr 7, 2026 |
| flatpak · RHEL 10 | 1.16.0-5.el10_0.2 | RHSA-2026:23420 | Apr 7, 2026 |
| flatpak · RHEL 8 | 0:1.12.9-4.el8_10 | RHSA-2026:21756 | Jun 24, 2026 |
| flatpak · RHEL 9 | 0:1.12.9-4.el9_8.1 | RHSA-2026:21755 | Jun 24, 2026 |
| flatpak · Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.5+esm1 | flatpak 1.6.5-0ubuntu0.5+esm1 | Apr 7, 2026 |
| flatpak · Ubuntu 22.04.1 LTS (jammy) | 1.12.7-1ubuntu0.1+esm1 | flatpak 1.12.7-1ubuntu0.1+esm1 | Apr 7, 2026 |
| flatpak · Ubuntu 24.04.5 LTS (noble) | 1.14.6-1ubuntu0.1+esm1 | flatpak 1.14.6-1ubuntu0.1+esm1 | Apr 7, 2026 |
| flatpak · almalinux 10 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 | May 28, 2026 |
| flatpak · almalinux 8 | 1.12.9-4.el8_10 | ALSA-2026:21756 | May 28, 2026 |
| flatpak · almalinux 9 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 | May 28, 2026 |
| flatpak · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak · ol 10 | 0:1.16.0-9.el10_2.1 | ELSA-2026-21757 | Jul 16, 2026 |
| flatpak · ol 8 | 0:1.12.9-4.el8_10 | ELSA-2026-21756 | May 28, 2026 |
| flatpak · ol 9 | 0:1.12.9-4.el9_8.1 | ELSA-2026-21755 | Jun 23, 2026 |
| flatpak · rocky 10 | 0:1.16.0-9.el10_2.1 | RLSA-2026:21757 | Jun 4, 2026 |
| flatpak · rocky 8 | 0:1.12.9-4.el8_10 | RLSA-2026:21756 | May 29, 2026 |
| flatpak · rocky 9 | 0:1.12.9-4.el9_8.1 | RLSA-2026:21755 | Jun 5, 2026 |
| flatpak · sles 15.6 | 1.16.0-150600.3.9.1 | SUSE-SU-2026:1600-1 | Apr 24, 2026 |
| flatpak · sles 15.7 | 1.16.0-150600.3.9.1 | SUSE-SU-2026:1600-1 | Apr 24, 2026 |
| flatpak-debuginfo · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-debugsource · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-devel · RHEL 8 | 0:1.12.9-4.el8_10 | RHSA-2026:21756 | Jun 24, 2026 |
| flatpak-devel · RHEL 9 | 0:1.12.9-4.el9_8.1 | RHSA-2026:21755 | Jun 24, 2026 |
| flatpak-devel · almalinux 10 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 | May 28, 2026 |
| flatpak-devel · almalinux 8 | 1.12.9-4.el8_10 | ALSA-2026:21756 | May 28, 2026 |
| flatpak-devel · almalinux 9 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 | May 28, 2026 |
| flatpak-devel · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-devel · ol 10 | 0:1.16.0-9.el10_2.1 | ELSA-2026-21757 | Jul 16, 2026 |
| flatpak-devel · ol 8 | 0:1.12.9-4.el8_10 | ELSA-2026-21756 | May 28, 2026 |
| flatpak-devel · ol 9 | 0:1.12.9-4.el9_8.1 | ELSA-2026-21755 | Jun 23, 2026 |
| flatpak-libs · RHEL 8 | 0:1.12.9-4.el8_10 | RHSA-2026:21756 | Jun 24, 2026 |
| flatpak-libs · RHEL 9 | 0:1.12.9-4.el9_8.1 | RHSA-2026:21755 | Jun 24, 2026 |
| flatpak-libs · almalinux 10 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 | May 28, 2026 |
| flatpak-libs · almalinux 8 | 1.12.9-4.el8_10 | ALSA-2026:21756 | May 28, 2026 |
| flatpak-libs · almalinux 9 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 | May 28, 2026 |
| flatpak-libs · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-libs · ol 10 | 0:1.16.0-9.el10_2.1 | ELSA-2026-21757 | Jul 16, 2026 |
| flatpak-libs · ol 8 | 0:1.12.9-4.el8_10 | ELSA-2026-21756 | May 28, 2026 |
| flatpak-libs · ol 9 | 0:1.12.9-4.el9_8.1 | ELSA-2026-21755 | Jun 23, 2026 |
| flatpak-libs-debuginfo · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-selinux · RHEL 8 | 0:1.12.9-4.el8_10 | RHSA-2026:21756 | Jun 24, 2026 |
| flatpak-selinux · RHEL 9 | 0:1.12.9-4.el9_8.1 | RHSA-2026:21755 | Jun 24, 2026 |
| flatpak-selinux · almalinux 10 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 | May 28, 2026 |
| flatpak-selinux · almalinux 8 | 1.12.9-4.el8_10 | ALSA-2026:21756 | May 28, 2026 |
| flatpak-selinux · almalinux 9 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 | May 28, 2026 |
| flatpak-selinux · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-selinux · ol 10 | 0:1.16.0-9.el10_2.1 | ELSA-2026-21757 | Jul 16, 2026 |
| flatpak-selinux · ol 8 | 0:1.12.9-4.el8_10 | ELSA-2026-21756 | May 28, 2026 |
| flatpak-selinux · ol 9 | 0:1.12.9-4.el9_8.1 | ELSA-2026-21755 | Jun 23, 2026 |
| flatpak-session-helper · RHEL 8 | 0:1.12.9-4.el8_10 | RHSA-2026:21756 | Jun 24, 2026 |
| flatpak-session-helper · RHEL 9 | 0:1.12.9-4.el9_8.1 | RHSA-2026:21755 | Jun 24, 2026 |
| flatpak-session-helper · almalinux 10 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 | May 28, 2026 |
| flatpak-session-helper · almalinux 8 | 1.12.9-4.el8_10 | ALSA-2026:21756 | May 28, 2026 |
| flatpak-session-helper · almalinux 9 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 | May 28, 2026 |
| flatpak-session-helper · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-session-helper · ol 10 | 0:1.16.0-9.el10_2.1 | ELSA-2026-21757 | Jul 16, 2026 |
| flatpak-session-helper · ol 8 | 0:1.12.9-4.el8_10 | ELSA-2026-21756 | May 28, 2026 |
| flatpak-session-helper · ol 9 | 0:1.12.9-4.el9_8.1 | ELSA-2026-21755 | Jun 23, 2026 |
| flatpak-session-helper-debuginfo · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-tests · Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.5+esm1 | flatpak-tests 1.6.5-0ubuntu0.5+esm1 | Apr 7, 2026 |
| flatpak-tests · Ubuntu 22.04.1 LTS (jammy) | 1.12.7-1ubuntu0.1+esm1 | flatpak-tests 1.12.7-1ubuntu0.1+esm1 | Apr 7, 2026 |
| flatpak-tests · Ubuntu 24.04.5 LTS (noble) | 1.14.6-1ubuntu0.1+esm1 | flatpak-tests 1.14.6-1ubuntu0.1+esm1 | Apr 7, 2026 |
| flatpak-tests · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| flatpak-tests-debuginfo · amzn 2023 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 | Apr 27, 2026 |
| gir1.2-flatpak-1.0 · Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.5+esm1 | gir1.2-flatpak-1.0 1.6.5-0ubuntu0.5+esm1 | Apr 7, 2026 |
| gir1.2-flatpak-1.0 · Ubuntu 22.04.1 LTS (jammy) | 1.12.7-1ubuntu0.1+esm1 | gir1.2-flatpak-1.0 1.12.7-1ubuntu0.1+esm1 | Apr 7, 2026 |
| gir1.2-flatpak-1.0 · Ubuntu 24.04.5 LTS (noble) | 1.14.6-1ubuntu0.1+esm1 | gir1.2-flatpak-1.0 1.14.6-1ubuntu0.1+esm1 | Apr 7, 2026 |
| libflatpak0 · Ubuntu 20.04 LTS (focal) | 1.6.5-0ubuntu0.5+esm1 | libflatpak0 1.6.5-0ubuntu0.5+esm1 | Apr 7, 2026 |
| libflatpak0 · Ubuntu 22.04.1 LTS (jammy) | 1.12.7-1ubuntu0.1+esm1 | libflatpak0 1.12.7-1ubuntu0.1+esm1 | Apr 7, 2026 |
| libflatpak0 · Ubuntu 24.04.5 LTS (noble) | 1.14.6-1ubuntu0.1+esm1 | libflatpak0 1.14.6-1ubuntu0.1+esm1 | Apr 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.