CVE-2026-6653

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

Published: Jun 22, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-416

N/ACVSS

NVD MITRE

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.

No summary for this CVE yet.

Weaknesses

CWE-416 CWE-611

Affected Products

GNOME

oss-project·USaka gnome project, glib

libxml2LibraryLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques

Collection

Initial Access

Privilege Escalation

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References

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

bugs.launchpad.net

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

gitlab.gnome.org

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