RHSA-2026:86714 — Security Advisory

An update for flatpak-builder is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

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.

Flatpak-builder is a tool for building flatpaks from sources.

Security Fix(es):

• flatpak-builder: Host code execution via git am hook execution in patch source extraction (use-git-am) (CVE-2026-86320)

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.