CVE-2026-0990

MEDIUM EPSS 49.4%

Published Jan 15, 20265mo ago · Modified Jun 17, 20261w ago

5.9 CVSS 3.1

Medium

Published Jan 15, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

5.9

Exploitability

2.2

Impact

3.6

Vector string

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

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

49.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-674

References 4

access.redhat.com https://access.redhat.com/errata/RHSA-2026:7519
access.redhat.com https://access.redhat.com/security/cve/CVE-2026-0990
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2429959
gitlab.gnome.org https://gitlab.gnome.org/GNOME/libxml2/-/issues/1018

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.