ALSA-2026:21756
ALSA-2026:21756 · Important: flatpak security update
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Security Fix(es): * flatpak: Flatpak: Arbitrary code execution via crafted symlinks in sandbox-expose options (CVE-2026-34078) * flatpak: Flatpak: Arbitrary file deletion on host via improper cache file path validation (CVE-2026-34079) 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.
Fix available
- Published
- Updated
Stack: system
Affected products and versions
flatpak AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 1.12.9-4.el8_10
Update to 1.12.9-4.el8_10
flatpak-devel AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 1.12.9-4.el8_10
Update to 1.12.9-4.el8_10
flatpak-libs AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 1.12.9-4.el8_10
Update to 1.12.9-4.el8_10
flatpak-selinux AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 1.12.9-4.el8_10
Update to 1.12.9-4.el8_10
flatpak-session-helper AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 1.12.9-4.el8_10
Update to 1.12.9-4.el8_10
Original sources
- https://access.redhat.com/errata/RHSA-2026:21756
- https://access.redhat.com/security/cve/CVE-2026-34078
- https://access.redhat.com/security/cve/CVE-2026-34079
- https://bugzilla.redhat.com/2456276
- https://bugzilla.redhat.com/2456284
- https://errata.almalinux.org/8/ALSA-2026-21756.html
- https://osv.dev/vulnerability/ALSA-2026:21756