# CVE-2026-90616: flatpak: Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.  Security Fix(es...

CVE-2026-90616 is fixed in 11 products on 1 platform, first by DEBIAN-CVE-2026-90616, released September 13, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-90616
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 12, 2026

## Description

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.  Security Fix(es):  * flatpak: Flatpak: Arbitrary code execution via missing symlink protection (CVE-2026-90616)  * flatpak: flatpak: Arbitrary write access as root via extra-data extraction (CVE-2026-96275)  * flatpak: flatpak: Buffer overflow in OCI delta stream path names on 32-bit systems (CVE-2026-96280)  * flatpak: Flatpak: Local privilege escalation via symlink traversal in revokefs writer (CVE-2026-96808)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | flatpak Debian 13.5 (trixie) | 1.16.6-1~deb13u3 | [DEBIAN-CVE-2026-90616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90616.md) | Sep 13, 2026 |
| Linux | flatpak Debian 14 | 1.18.1-1 | [DEBIAN-CVE-2026-90616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90616.md) | Sep 13, 2026 |
| Linux | flatpak RHEL 10 | 1.16.0-5.el10_0.6 | [RHSA-2026:92221](https://patchblox.com/security/data/fix/linux/rhsa-2026-92221.md) | Oct 13, 2026 |
| Linux | flatpak RHEL 8 | 0:1.12.9-7.el8_10 | [RHSA-2026:80687](https://patchblox.com/security/data/fix/linux/rhsa-2026-80687.md) | Oct 13, 2026 |
| Linux | flatpak RHEL 9 | 0:1.12.9-4.el9_8.4 | [RHSA-2026:80497](https://patchblox.com/security/data/fix/linux/rhsa-2026-80497.md) | Oct 12, 2026 |
| Linux | flatpak almalinux 10 | 1.16.0-9.el10_2.4 | [ALSA-2026:80498](https://patchblox.com/security/data/fix/linux/alsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak almalinux 8 | 1.12.9-7.el8_10 | [ALSA-2026:80687](https://patchblox.com/security/data/fix/linux/alsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak almalinux 9 | 1.12.9-4.el9_8.4 | [ALSA-2026:80497](https://patchblox.com/security/data/fix/linux/alsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak ol 10 | 0:1.16.0-9.el10_2.4 | [ELSA-2026-80498](https://patchblox.com/security/data/fix/linux/elsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak ol 8 | 0:1.12.9-7.el8_10 | [ELSA-2026-80687](https://patchblox.com/security/data/fix/linux/elsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak ol 9 | 0:1.12.9-4.el9_8.4 | [ELSA-2026-80497](https://patchblox.com/security/data/fix/linux/elsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak rocky 10 | 0:1.16.0-9.el10_2.4 | [RLSA-2026:80498](https://patchblox.com/security/data/fix/linux/rlsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak rocky 8 | 0:1.12.9-7.el8_10 | [RLSA-2026:80687](https://patchblox.com/security/data/fix/linux/rlsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak rocky 9 | 0:1.12.9-4.el9_8.4 | [RLSA-2026:80497](https://patchblox.com/security/data/fix/linux/rlsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak sles 15.6 | 1.16.6-150600.3.12.1 | [SUSE-SU-2026:4944-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4944-1.md) | Nov 7, 2026 |
| Linux | flatpak sles 15.7 | 1.16.6-150600.3.12.1 | [SUSE-SU-2026:4944-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4944-1.md) | Nov 7, 2026 |
| Linux | flatpak-debuginfo amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-debugsource amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-devel RHEL 8 | 0:1.12.9-7.el8_10 | [RHSA-2026:80687](https://patchblox.com/security/data/fix/linux/rhsa-2026-80687.md) | Oct 13, 2026 |
| Linux | flatpak-devel RHEL 9 | 0:1.12.9-4.el9_8.4 | [RHSA-2026:80497](https://patchblox.com/security/data/fix/linux/rhsa-2026-80497.md) | Oct 12, 2026 |
| Linux | flatpak-devel almalinux 10 | 1.16.0-9.el10_2.4 | [ALSA-2026:80498](https://patchblox.com/security/data/fix/linux/alsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-devel almalinux 8 | 1.12.9-7.el8_10 | [ALSA-2026:80687](https://patchblox.com/security/data/fix/linux/alsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-devel almalinux 9 | 1.12.9-4.el9_8.4 | [ALSA-2026:80497](https://patchblox.com/security/data/fix/linux/alsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-devel amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-devel ol 10 | 0:1.16.0-9.el10_2.4 | [ELSA-2026-80498](https://patchblox.com/security/data/fix/linux/elsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-devel ol 8 | 0:1.12.9-7.el8_10 | [ELSA-2026-80687](https://patchblox.com/security/data/fix/linux/elsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-devel ol 9 | 0:1.12.9-4.el9_8.4 | [ELSA-2026-80497](https://patchblox.com/security/data/fix/linux/elsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-libs RHEL 8 | 0:1.12.9-7.el8_10 | [RHSA-2026:80687](https://patchblox.com/security/data/fix/linux/rhsa-2026-80687.md) | Oct 13, 2026 |
| Linux | flatpak-libs RHEL 9 | 0:1.12.9-4.el9_8.4 | [RHSA-2026:80497](https://patchblox.com/security/data/fix/linux/rhsa-2026-80497.md) | Oct 12, 2026 |
| Linux | flatpak-libs almalinux 10 | 1.16.0-9.el10_2.4 | [ALSA-2026:80498](https://patchblox.com/security/data/fix/linux/alsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-libs almalinux 8 | 1.12.9-7.el8_10 | [ALSA-2026:80687](https://patchblox.com/security/data/fix/linux/alsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-libs almalinux 9 | 1.12.9-4.el9_8.4 | [ALSA-2026:80497](https://patchblox.com/security/data/fix/linux/alsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-libs amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-libs ol 10 | 0:1.16.0-9.el10_2.4 | [ELSA-2026-80498](https://patchblox.com/security/data/fix/linux/elsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-libs ol 8 | 0:1.12.9-7.el8_10 | [ELSA-2026-80687](https://patchblox.com/security/data/fix/linux/elsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-libs ol 9 | 0:1.12.9-4.el9_8.4 | [ELSA-2026-80497](https://patchblox.com/security/data/fix/linux/elsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-libs-debuginfo amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-selinux RHEL 8 | 0:1.12.9-7.el8_10 | [RHSA-2026:80687](https://patchblox.com/security/data/fix/linux/rhsa-2026-80687.md) | Oct 13, 2026 |
| Linux | flatpak-selinux RHEL 9 | 0:1.12.9-4.el9_8.4 | [RHSA-2026:80497](https://patchblox.com/security/data/fix/linux/rhsa-2026-80497.md) | Oct 12, 2026 |
| Linux | flatpak-selinux almalinux 10 | 1.16.0-9.el10_2.4 | [ALSA-2026:80498](https://patchblox.com/security/data/fix/linux/alsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-selinux almalinux 8 | 1.12.9-7.el8_10 | [ALSA-2026:80687](https://patchblox.com/security/data/fix/linux/alsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-selinux almalinux 9 | 1.12.9-4.el9_8.4 | [ALSA-2026:80497](https://patchblox.com/security/data/fix/linux/alsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-selinux amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-selinux ol 10 | 0:1.16.0-9.el10_2.4 | [ELSA-2026-80498](https://patchblox.com/security/data/fix/linux/elsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-selinux ol 8 | 0:1.12.9-7.el8_10 | [ELSA-2026-80687](https://patchblox.com/security/data/fix/linux/elsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-selinux ol 9 | 0:1.12.9-4.el9_8.4 | [ELSA-2026-80497](https://patchblox.com/security/data/fix/linux/elsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper RHEL 8 | 0:1.12.9-7.el8_10 | [RHSA-2026:80687](https://patchblox.com/security/data/fix/linux/rhsa-2026-80687.md) | Oct 13, 2026 |
| Linux | flatpak-session-helper RHEL 9 | 0:1.12.9-4.el9_8.4 | [RHSA-2026:80497](https://patchblox.com/security/data/fix/linux/rhsa-2026-80497.md) | Oct 12, 2026 |
| Linux | flatpak-session-helper almalinux 10 | 1.16.0-9.el10_2.4 | [ALSA-2026:80498](https://patchblox.com/security/data/fix/linux/alsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper almalinux 8 | 1.12.9-7.el8_10 | [ALSA-2026:80687](https://patchblox.com/security/data/fix/linux/alsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper almalinux 9 | 1.12.9-4.el9_8.4 | [ALSA-2026:80497](https://patchblox.com/security/data/fix/linux/alsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-session-helper ol 10 | 0:1.16.0-9.el10_2.4 | [ELSA-2026-80498](https://patchblox.com/security/data/fix/linux/elsa-2026-80498.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper ol 8 | 0:1.12.9-7.el8_10 | [ELSA-2026-80687](https://patchblox.com/security/data/fix/linux/elsa-2026-80687.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper ol 9 | 0:1.12.9-4.el9_8.4 | [ELSA-2026-80497](https://patchblox.com/security/data/fix/linux/elsa-2026-80497.md) | Nov 7, 2026 |
| Linux | flatpak-session-helper-debuginfo amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-tests amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |
| Linux | flatpak-tests-debuginfo amzn 2023 | 1.18.1-1.amzn2023 | [ALAS2023-2026-3143](https://patchblox.com/security/data/fix/linux/alas2023-2026-3143.md) | Sep 28, 2026 |

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