It was discovered that the JAXP component of OpenJDK did not enforce the maximum XML name limit (jdk.xml.MaxXMLNameLimit) when parsing namespace URIs in XML files. A specially crafted XML document could cause a Java application using JAXP to consume an excessive amount of memory and CPU time when parsed.

It was discovered that the JAXP component of OpenJDK did not place a limit on the number of entity replacements performed when parsing XML files. A specially crafted XML document could cause a Java application using JAXP to consume an excessive amount of memory and CPU time when parsed.

Updates correcting this issue address the problem by introducing a limit on the number of entity replacements that can be performed. The limit can be controlled using the jdk.xml.entityReplacementLimit system property.