CVE-2026-0990

MEDIUM

5.9

Description

A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published1/15/2026

Last Modified1/16/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-674

References

https://access.redhat.com/security/cve/CVE-2026-0990(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2429959(secalert@redhat.com)

IOC Correlations

No correlations recorded

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