Uncontrolled Recursion Affecting libxml2-debugsource package, versions <0:2.10.4-1.amzn2023.0.16


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.06% (20th percentile)

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  • Snyk IDSNYK-AMZN2023-LIBXML2DEBUGSOURCE-15245764
  • published6 Feb 2026
  • disclosed15 Jan 2026

Introduced: 15 Jan 2026

CVE-2026-0990  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libxml2-debugsource to version 0:2.10.4-1.amzn2023.0.16 or higher.
This issue was patched in ALAS2023-2026-1396.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2-debugsource package and not the libxml2-debugsource package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Base Scores

version 3.1