CVE-2026-34079
flatpak: Flatpak is a Linux application sandboxing and distribution framework
CVE-2026-34079 is fixed in 13 products on 1 platform, first by flatpak 1.0.9-0ubuntu0.4+esm1, released April 7, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.0
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0033
26th percentile
Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory. This allows Flatpak apps to delete arbitrary files on the host. 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-2026-34079 | Apr 7, 2026 |
| flatpak · Debian 13.5 (trixie) | 1.16.6-1~deb13u1 | DEBIAN-CVE-2026-34079 | Apr 7, 2026 |
| flatpak · Debian 14 | 1.16.4-1 | DEBIAN-CVE-2026-34079 | 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 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4+esm1 | flatpak 1.0.9-0ubuntu0.4+esm1 | Apr 7, 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 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4+esm1 | flatpak-tests 1.0.9-0ubuntu0.4+esm1 | Apr 7, 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 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4+esm1 | gir1.2-flatpak-1.0 1.0.9-0ubuntu0.4+esm1 | Apr 7, 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 18.04.6 LTS (bionic) | 1.0.9-0ubuntu0.4+esm1 | libflatpak0 1.0.9-0ubuntu0.4+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 |
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