Apache · Apache Solr · CVE-2012-6612
**Name of the Vulnerable Software and Affected Versions**
Apache Solr versions prior to 4.1
**Description**
The issue affects the UpdateRequestHandler for XSLT or XPathEntityProcessor, allowing remote attackers to have an impact via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
**Recommendations**
For Apache Solr versions prior to 4.1, update to version 4.1 or later to resolve the issue.