CVE-2025-49794

CRITICAL
INFO Priority: 0.08 BB Relevance: 78/100
Published: 2025-06-16 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: High
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
&mdash; &mdash; 0 < 2.15.0

References & Advisories (34)

https://access.redhat.com/errata/RHSA-2025:10630
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10698
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10699
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:11580
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12098
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12099
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12199
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12237
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12239
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12240
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12241
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:13335
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15397
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15827
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15828
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:18217
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:18218
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:18219
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:18240
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19020
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19041
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19046
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19894
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21913
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:0934
vendor-advisory x_refsource_REDHAT
Showing 25 of 34 references

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS — Exploitation Probability

0.83%
Raw Score 0.008330
Percentile 57.5%
Date 2026-10-28

Intelligence Sources

mitre ref →
nvd ref →