CVE-2013-6407: The UpdateRequestHandler for XML in Apache Solr before 4.1 allows remote attackers to have an unspecified i...

Security readout for executives and security teams

Apache Solr versions before 4.1 had an XML parsing flaw in the update request path. A remote attacker could submit XML containing external entity constructs and trigger unspecified impact. The source bundle does not provide CVSS, detailed impact, or active exploitation evidence. Exposure is most likely where Apache Solr before 4.1 is deployed and its XML update handler is reachable by untrusted users or networks. The provided affected-product metadata is incomplete, but the description specifically names Solr before 4.1. Treat this as a legacy exposure cleanup item unless old Solr instances are internet-facing or unauthenticated internally. Business urgency rises sharply if unsupported Solr before 4.1 remains reachable by untrusted parties. Mitigation focus: Identify and prioritize Solr deployments running versions before 4.1.; Upgrade affected Solr instances to 4.1 or a vendor-supported fixed package.; Review Red Hat advisories if using distribution-managed Solr packages..

Prepared

Jun 14, 2026, 15:13 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.