Issued at: 2026-11-13
Updated at: 2026-11-14
Advisory content derived from Red Hat RHSA-2026:98595, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: flatpak security update
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)
* flatpak: flatpak: Arbitrary file deletion in root context via path traversal in deploy directory export/bin (CVE-2026-97023)
* flatpak: flatpak: Arbitrary write in root context via path traversal in deploy directory files/etc (CVE-2026-97024)
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.