Description
An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free.
Affected products
xmlsoft: libxml2
References8
- gitlab.gnome.org/GNOME/libxml2/-/issues/604 ExploitIssue Tracking
- gitlab.gnome.org/GNOME/libxml2/-/issues/604 ExploitIssue Tracking
- gitlab.gnome.org/GNOME/libxml2/-/tags Release Notes
- gitlab.gnome.org/GNOME/libxml2/-/tags Release Notes
- lists.debian.org/debian-lts-announce/2025/02/msg00028.html
- security.netapp.com/advisory/ntap-20241018-0009/
- cert-portal.siemens.com/productcert/html/ssa-784301.html
- cert-portal.siemens.com/productcert/html/ssa-794697.html
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 71 · as of 5 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.