CVE-2017-7660

mediumpriority · track · 32EPSS 0.056 · 93 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.63% (93rd) EPSS

CVSS 5 · medium

Is it mine?

25 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287US

affected products (25)

Products and version ranges known to be affected.

Apache Software Foundation Apache Solr≤ 5.3 to 5.5.4enisa_euvdEU
Apache Software Foundation Apache Solr≤ 6.0 to 6.5.1enisa_euvdEU
apache solr= 5.3.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.3.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.3.2nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.4.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.4.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.5.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.5.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.5.2nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.5.3nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 5.5.4nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.0.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.0.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.1.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.2.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.2.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.3.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.4.0nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr= 6.4.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-c82r-qg3w-q5mvApache Solr insecure inter-node communication2022-05-14ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2017-07-07modified 2026-06-17

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+7709 more

references (7)

External citations — patches, advisories, analysis.

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