7.0High
CVE-2026-6653libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
- https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260 issue-trackingExploitIssue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058 issue-trackingExploitIssue TrackingPatch
CPE matches (NVD) (1)
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*≥ 2.9.11 ≤ 2.11.0