RHSA-2026:6499 — Security Advisory
Red Hat Security Advisory: libxslt security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · April 3, 2026
Updated · October 14, 2026
Topic
An update for libxslt is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.
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
libxslt is a library for transforming XML files into other textual formats (including HTML, plain text, and other XML representations of the underlying data) using the standard XSLT stylesheet transformation mechanism.
Security Fix(es):
- libxslt: Processing web content may disclose sensitive information (CVE-2023-40403)
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.