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CVE-2026-0992

Libxml2: libxml2: denial of service via crafted xml catalogs

Published: Jan 15, 2026Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-400
2.9LOW
NVD MITRE
EPSS Score
0.3%
Top 78.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400

Affected Products

Red Hat
commercial·USaka redhat
hardened imagesOn-prem
Operating Systems / linux-distro
jboss core servicesOn-prem
Operating Systems / linux-distro
openshift container platformOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Hardened ImagesOn-premOS
Operating Systems / linux-distro
Red Hat JBoss Core ServicesOn-premWeb App
Enterprise Software / itsm-monitoring
Red Hat OpenShift Container Platform 4SaaSSaaS Service
Cloud & SaaS / container-orchestration
ibm
commercial·USaka international business machines
viosOn-prem
Enterprise Software / itsm-monitoring
aixOS
Operating Systems / unix-bsd
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
libxml2LibraryLibrary
OSS Libraries / generic-library
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
and 8 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Scannable·OpenVAS
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-0992&#13;
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2429975&#13;
bugzilla.redhat.com
https://nvd.nist.gov/vuln/detail/CVE-2026-0992&#13;
nvd.nist.gov
and 9 more references View all →
News mentions
Could not load news mentions.

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