CVE-2013-6407: Apache Solr

Medium severity, CVSS 6.4. EPSS: 11.4% chance of exploitation in the next 30 days.

The UpdateRequestHandler for XML in Apache Solr before 4.1 allows remote attackers to have an unspecified impact via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

Affected products

• Apache Solr: up to and including 4.0.0; version 3.6.0 only; version 3.6.1 only; version 3.6.2 only; version 4.0.0 only

Published 2013-12-07. Last modified 2026-06-17.