RHSA-2026:64812 — Security Advisory
Red Hat Security Advisory: expat security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · September 8, 2026
Updated · November 1, 2026
Topic
An update for expat is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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
Expat is a C library for parsing XML documents.
Security Fix(es):
-
expat: libexpat: Use-after-free vulnerability due to improper handler call depth tracking (CVE-2026-50219)
-
expat: libexpat: Arbitrary Code Execution via Heap-based Buffer Overflow (CVE-2026-56132)
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.