High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-7660
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:26 UTC · Revision 1
Source evidence
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.
osv:CVE-2017-7660
Complete source record
{
"id": "a9c79912291ff22d683bb78b08eccb27d5ee33f9669d211aa4dc0c95f9f41beb",
"url": "https://osv.dev/vulnerability/CVE-2017-7660",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-7660",
"summary": "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.",
"evidence": "osv:CVE-2017-7660",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-7660",
"aliases": [
"CVE-2017-7660",
"GHSA-c82r-qg3w-q5mv"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
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],
"modified": "2026-10-24T10:30:53.385301907Z",
"provider": "osv",
"references": [
"https://security.netapp.com/advisory/ntap-20181127-0003/"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2017-7660",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 437909,
"published_at": "2017-07-07T19:29:00.197+00:00"
}