Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') Affecting xmlrpc-c package, versions <0:1.51.08-2.amzn2023.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-AMZN2023-XMLRPCC-13731271
  • published29 Oct 2025
  • disclosed4 Feb 2024

Introduced: 4 Feb 2024

CVE-2023-52426  (opens in a new tab)
CWE-776  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 xmlrpc-c to version 0:1.51.08-2.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2025-1229.

NVD Description

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

libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.

CVSS Base Scores

version 3.1