CVE-2017-3163: Apache Solr

High severity, CVSS 7.5. EPSS: 6.6% chance of exploitation in the next 30 days.

When using the Index Replication feature, Apache Solr nodes can pull index files from a master/leader node using an HTTP API which accepts a file name. However, Solr before 5.5.4 and 6.x before 6.4.1 did not validate the file name, hence it was possible to craft a special request involving path traversal, leaving any file readable to the Solr server process exposed. Solr servers protected and restricted by firewall rules and/or authentication would not be at risk since only trusted clients and users would gain direct HTTP access.

Affected products

• Apache Solr: up to and including 5.5.3; version 6.0.0 only; version 6.0.1 only; version 6.1.0 only; version 6.2.0 only; version 6.2.1 only; …

Published 2017-08-30. Last modified 2026-06-17.