RHSA-2026:21756 — Security Advisory
Red Hat Security Advisory: flatpak security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · May 29, 2026
Updated · July 6, 2026
Topic
An update for flatpak is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
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.