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XML External Entity (XXE) Injection The advisory has been revoked - it doesn't affect any version of package expat  (opens in a new tab)

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19.43% (98th percentile)

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  • Snyk IDSNYK-RHEL9-EXPAT-14171945
  • published3 Dec 2025
  • disclosed19 Feb 2013
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Introduced: 19 Feb 2013

CVE-2013-0340  (opens in a new tab)
CWE-611  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by RHEL.

expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

References