RHSA-2025:21776 — Security Advisory

Red Hat Security Advisory: expat security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · November 20, 2025

Updated · October 15, 2026

Topic

An update for expat 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

Expat is a C library for parsing XML documents.

Security Fix(es):

  • expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)

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.

Related CVEs

RHSA-2025:21776 — Red Hat Security Advisory: expat security update | PulseLinux