by Kastro
Paper/Archive/CVE-2026-6653

CVE-2026-6653

GNOME libxml2 — libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
35
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 29.2.292 × 205.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
libxml22.9.11 – < 2.11.02.11.0CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
canonical (CNA)7.0CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refbugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260refgitlab.gnome.org/GNOME/libxml2/-/work_items/1058