CVE-2025-49794
9.1
CRITICAL
CVSS 3.1
EPSS 0.45%
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.
How to fix CVE-2025-49794
To remediate CVE-2025-49794, upgrade the affected package to a fixed version below.
- —upgrade to 2.13.9-r0 or later
- —upgrade to 2.9.10+dfsg-6.7+deb11u8 or later
Is CVE-2025-49794 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.13.9-r0
- from 0, < 2.9.10+dfsg-6.7+deb11u8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |