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Vulnerability record · CVE-2026-0990 · published 15 January 2026

CVE-2026-0990: Redhat hardened images vulnerability

Redhat · Hardened Images

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.

5.9 CVSS 3.1 Medium EPSS 0.97% · top 39.6% CWE-674 · CWE-674
5.9CVSS 3.1 base score
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
4References, 1 tagged exploit
1 Sep 2026Last modified by NVD

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-0990), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.