High (8.8) in apache solr. EPSS 5.3% chance of exploitation in the next 30 days. Fixed in org.apache.solr:solr-parent 8.6.0.
Reported in SOLR-14515 (private) and fixed in SOLR-14561 (public), released in Solr version 8.6.0. The Replication handler (https://lucene.apache.org/solr/guide/8_6/index-replication.html#http-api-commands-for-the-replicationhandler) allows commands backup, restore and deleteBackup. Each of these take a location parameter, which was not validated, i.e you could read/write to any location the solr user can access.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
5.3% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)