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UBUNTU-CVE-2026-6653

0
Unknown
Vulnerabilitygcveosvubuntu-cve-2026-6653ubuntu-22-04-ltsubuntu-24-04-lts
Published: 06/22/2026 (06/22/2026, 00:00:00 UTC)
Source: GCVE Database
Product: libxml2

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 v4.0

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

Ubuntu:22.04:LTSmore threats →ghsa
libxml2
pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.12?arch=source&distro=jammy
Affected versions
<2.9.13+dfsg-1ubuntu0.12=2.9.12+dfsg-4=2.9.12+dfsg-5=2.9.12+dfsg-6=2.9.13+dfsg-1=2.9.13+dfsg-1build1=2.9.13+dfsg-1ubuntu0.1=2.9.13+dfsg-1ubuntu0.2=2.9.13+dfsg-1ubuntu0.3=2.9.13+dfsg-1ubuntu0.4=2.9.13+dfsg-1ubuntu0.5=2.9.13+dfsg-1ubuntu0.6=2.9.13+dfsg-1ubuntu0.7=2.9.13+dfsg-1ubuntu0.8=2.9.13+dfsg-1ubuntu0.9=2.9.13+dfsg-1ubuntu0.10=2.9.13+dfsg-1ubuntu0.11
Ubuntu:24.04:LTSmore threats →ghsa
libxml2
pkg:deb/ubuntu/[email protected]+dfsg-1.3ubuntu3.8?arch=source&distro=noble
Affected versions
<2.9.14+dfsg-1.3ubuntu3.8=2.9.14+dfsg-1.3=2.9.14+dfsg-1.3build1=2.9.14+dfsg-1.3build2=2.9.14+dfsg-1.3build3=2.9.14+dfsg-1.3ubuntu1=2.9.14+dfsg-1.3ubuntu2=2.9.14+dfsg-1.3ubuntu3=2.9.14+dfsg-1.3ubuntu3.1=2.9.14+dfsg-1.3ubuntu3.2=2.9.14+dfsg-1.3ubuntu3.3=2.9.14+dfsg-1.3ubuntu3.4=2.9.14+dfsg-1.3ubuntu3.5=2.9.14+dfsg-1.3ubuntu3.6=2.9.14+dfsg-1.3ubuntu3.7

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-6653
Osv Schema Version
1.7.0
Aliases
[]
Ecosystems
["Ubuntu:22.04:LTS","Ubuntu:24.04:LTS"]
Database Specific Severity
null
Cvss Version
4.0

Threat ID: 6a58b4fe68715ace43db23fa

Added to database: 07/16/2026, 10:39:58 UTC

Last updated: 07/16/2026, 10:39:58 UTC

Views: 1

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