CVE-2026-6653

HIGH EPSS 20.6%

Published Jun 22, 20261w ago · Modified Jun 22, 20261w ago

7.0 CVSS 4.0

High

Published Jun 22, 2026 1w ago

Last Modified Jun 22, 2026 1w ago

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.

CVSS Details

Base Score

7.0

Exploitability

—

Impact

—

Vector string

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

20.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-416 Use After Free Memory Safety

CWE-611

References 2

bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260
gitlab.gnome.org https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.