Detections
Analytics

CVE-2026-6653

high

Description

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

References

https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058

https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260

Details

Source: Mitre, NVD

Published: 2026-06-22

Updated: 2026-07-14

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 8.3

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00289