All vulnerabilities
CVE-2025-49794
Libxml: heap use after free (uaf) leads to denial of service (dos)
Description
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
Patch Available
Fix available through Seal Security. No upgrade required, protect your application instantly.
Fix without upgrading
Score
9.1
Severity
Critical
Ecosystem
RPM
Publish Date
June 16, 2025
Modified Date
July 8, 2026
Score Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected Versions

