{"cve":"CVE-2017-7660","nvd":{"published":"2017-07-07T19:29:00.197","modified":"2026-06-17T01:24:54.957","status":"Modified","description":"Apache Solr uses a PKI based mechanism to secure inter-node communication when security is enabled. It is possible to create a specially crafted node name that does not exist as part of the cluster and point it to a malicious node. This can trick the nodes in cluster to believe that the malicious node is a member of the cluster. So, if Solr users have enabled BasicAuth authentication mechanism using the BasicAuthPlugin or if the user has implemented a custom Authentication plugin, which does not implement either \"HttpClientInterceptorPlugin\" or \"HttpClientBuilderPlugin\", his/her servers are vulnerable to this attack. Users who only use SSL without basic authentication or those who use Kerberos are not affected.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-287"],"references":["http://mail-archives.us.apache.org/mod_mbox/www-announce/201707.mbox/%3CCAOOKt53EgrybaD%2BiSn-nBbvFdse-szhg%3DhMoDZuvUvyMme-Z%3Dg%40mail.gmail.com%3E","http://www.securityfocus.com/bid/99485","https://security.netapp.com/advisory/ntap-20181127-0003/","http://mail-archives.us.apache.org/mod_mbox/www-announce/201707.mbox/%3CCAOOKt53EgrybaD%2BiSn-nBbvFdse-szhg%3DhMoDZuvUvyMme-Z%3Dg%40mail.gmail.com%3E","http://www.securityfocus.com/bid/99485"],"products":["apache:solr"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2017-7660","score":0.05632,"percentile":0.92949,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c82r-qg3w-q5mv","url":"https://osv.dev/vulnerability/GHSA-c82r-qg3w-q5mv","summary":"Apache Solr insecure inter-node communication","modified":"2024-02-22T05:32:40.576456Z","packages":[{"ecosystem":"Maven","name":"org.apache.solr:solr-core","purl":"pkg:maven/org.apache.solr/solr-core","ranges":[">=5.3.0 <5.5.5"],"fixed":["5.5.5"]},{"ecosystem":"Maven","name":"org.apache.solr:solr-core","purl":"pkg:maven/org.apache.solr/solr-core","ranges":[">=6.0.0 <6.6.0"],"fixed":["6.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}