Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| flatpak | flatpak | < 1.16.4 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | flatpak | 1.16.4-1 | — |
| Debian 13 | flatpak | 1.16.6-1~deb13u1 | — |
| Debian 12 | flatpak | 1.14.10-1~deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | flatpak | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | flatpak | 1.14.6-1ubuntu0.1+esm1 | USN-8741-1 |
| Ubuntu Pro 22.04 LTS | flatpak | 1.12.7-1ubuntu0.1+esm1 | USN-8741-1 |
| Ubuntu Pro 20.04 LTS | flatpak | 1.6.5-0ubuntu0.5+esm1 | USN-8741-1 |
| Ubuntu Pro 18.04 LTS | flatpak | 1.0.9-0ubuntu0.4+esm1 | USN-8741-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | flatpak +4 | 1.16.0-9.el10_2.1 | RHSA-2026:21757 |
| RHEL 9 | flatpak +4 | 1.12.9-4.el9_8.1 | RHSA-2026:21755 |
| RHEL 8 | flatpak +4 | 1.12.9-4.el8_10 | RHSA-2026:21756 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | flatpak +4 | 1.16.0-5.el10_0.2 | RHSA-2026:23420 |
| RHEL 9.6 EUS | flatpak +4 | 1.12.9-4.el9_6.1 | RHSA-2026:23418 |
| RHEL 9.4 E4S | flatpak +3 | 1.12.9-3.el9_4.1 | RHSA-2026:23417 |
| RHEL 9.2 E4S | flatpak +3 | 1.12.7-5.el9_2.1 | RHSA-2026:23419 |
| RHEL 8.8 TUS | flatpak +3 | 1.12.9-1.el8_8 | RHSA-2026:25068 |
| RHEL 8.8 E4S | flatpak +3 | 1.12.9-1.el8_8 | RHSA-2026:25068 |
| RHEL 8.6 EUS Long Life | flatpak +3 | 1.12.9-1.el8_6 | RHSA-2026:25381 |
| RHEL 8.6 AUS | flatpak +3 | 1.12.9-1.el8_6 | RHSA-2026:25381 |
| RHEL 8.4 EUS Long Life | flatpak +3 | 1.12.9-2.el8_4 | RHSA-2026:30901 |
| RHEL 8.4 AUS | flatpak +3 | 1.12.9-2.el8_4 | RHSA-2026:30901 |
| RHEL 7 ELS | flatpak +2 | 1.12.9-3.el7_9 | RHSA-2026:35843 |
| RHEL 7 ELS | flatpak-builder | 1.0.0-16.el7_9 | RHSA-2026:35843 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | flatpak +4 | 1.16.0-9.el10_2.1 | ALSA-2026:21757 |
| AlmaLinux 9 | flatpak +4 | 1.12.9-4.el9_8.1 | ALSA-2026:21755 |
| AlmaLinux 8 | flatpak +4 | 1.12.9-4.el8_10 | ALSA-2026:21756 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | flatpak | 1.16.0-9.el10_2.1 | RLSA-2026:21757 |
| Rocky Linux 9 | flatpak | 1.12.9-4.el9_8.1 | RLSA-2026:21755 |
| Rocky Linux 8 | flatpak | 1.12.9-4.el8_10 | RLSA-2026:21756 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | flatpak | 1.16.0-150600.3.9.1 | SUSE-SU-2026:1600-1 |
| SLES 15 SP6 | flatpak | 1.16.0-150600.3.9.1 | SUSE-SU-2026:1600-1 |
| SLES 15 SP5 | flatpak | 1.16.0-150500.3.18.1 | SUSE-SU-2026:5127-1, SUSE-SU-2026:1541-1 |
| SLES 15 SP4 | flatpak | 1.12.8-150400.3.12.1 | SUSE-SU-2026:1511-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | flatpak | 1.16.0-150600.3.9.1 | SUSE-SU-2026:1600-1 |
| SLES for SAP 15 SP5 | flatpak | 1.16.0-150500.3.18.1 | SUSE-SU-2026:5127-1, SUSE-SU-2026:1541-1 |
| SLES for SAP 15 SP4 | flatpak | 1.12.8-150400.3.12.1 | SUSE-SU-2026:1511-1 |
| SLE HPC 15 SP5 | flatpak | 1.16.0-150500.3.18.1 | SUSE-SU-2026:5127-1, SUSE-SU-2026:1541-1 |
| SLE HPC 15 SP4 | flatpak | 1.12.8-150400.3.12.1 | SUSE-SU-2026:1511-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | flatpak | 1.16.6-1.1 | openSUSE-SU-2026:10541-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | flatpak | 1.16.4-r0 | — |
| Alpine v3.23 | flatpak | 1.16.4-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | flatpak +5 | 1.16.6-1.amzn2023 | ALAS2023-2026-1601 |
| Amazon Linux 2 | flatpak +2 | 1.0.9-10.amzn2.0.7 | ALAS2-2026-3261 |
| Amazon Linux 2 | flatpak-builder | 1.0.0-10.amzn2.0.7 | ALAS2-2026-3261 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | flatpak +4 | 1.16.0-9.el10_2.1 | ELSA-2026-21757 |
| Oracle Linux 9 | flatpak +4 | 1.12.9-4.el9_8.1 | ELSA-2026-21755 |
| Oracle Linux 8 | flatpak +4 | 1.12.9-4.el8_10 | ELSA-2026-21756 |
| Oracle Linux 7 | flatpak +2 | 1.12.9-4.0.1.el7 | ELSA-2026-35843 |
| Oracle Linux 7 | flatpak-builder | 1.0.0-17.0.1.el7 | ELSA-2026-35843 |
Advisories 30
- WID-SEC-2026-1732 Red Hat Enterprise Linux (Flatpak): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- SUSE-SU-2026:5127-1 Security update for flatpak SUSE / openSUSE Security Updates · Nov 7, 2026
- ALSA-2026:21755 Important: flatpak security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:21757 Important: flatpak security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:21756 Important: flatpak security update AlmaLinux Security Advisories · Oct 29, 2026
- ELSA-2026-35843 Important: flatpak security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 13, 2026
- USN-8741-1 flatpak vulnerabilities Ubuntu Security Notices (USN) · Sep 10, 2026
- ELSA-2026-21757 Important: flatpak security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2026
- RHSA-2026:35843 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:30901 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:25381 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:25068 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:23419 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:23420 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:23418 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:23417 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:21757 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:21755 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- RHSA-2026:21756 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jul 6, 2026
- ELSA-2026-21755 Important: flatpak security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- RLSA-2026:21755 Important: flatpak security update Rocky Linux Security Advisories · Jun 5, 2026
- RLSA-2026:21757 Important: flatpak security update Rocky Linux Security Advisories · Jun 4, 2026
- RLSA-2026:21756 Important: flatpak security update Rocky Linux Security Advisories · May 29, 2026
- ELSA-2026-21756 Important: flatpak security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 28, 2026
- ALAS2023-2026-1601 Important: flatpak security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 30, 2026
- ALAS2-2026-3261 Important: flatpak security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 29, 2026
- SUSE-SU-2026:1600-1 Security update for flatpak SUSE / openSUSE Security Updates · Apr 25, 2026
- SUSE-SU-2026:1541-1 Security update for flatpak SUSE / openSUSE Security Updates · Apr 23, 2026
- SUSE-SU-2026:1511-1 Security update for flatpak SUSE / openSUSE Security Updates · Apr 22, 2026
- openSUSE-SU-2026:10541-1 flatpak-1.16.6-1.1 on GA media SUSE / openSUSE Security Updates · Apr 15, 2026