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Product · Apache Software Foundation

Apache Solr

24 known vulnerabilities.

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  • High 8.1
    CVE-2026-44825 Public exploit

    Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users

    Hardcoded credentials in the Basic Authentication setup tool (bin/solr auth enable) in Apache Solr versions 9.4.0 through 9.10.1 and 10.0.0 allows a remote attacker to gain full administrative access to the cluster via publicly known default credentials insta…

  • High 7.1
    CVE-2026-22444 Public exploit

    Apache Solr: Insufficient file-access checking in standalone core-creation requests

    The "create core" API of Apache Solr 8.6 through 9.10.0 lacks sufficient input validation on some API parameters, which can cause Solr to check the existence of and attempt to read file-system paths that should be disallowed by Solr's "allowPaths" security se…

  • Critical 9.8
    CVE-2024-45216 Public exploit EPSS 93%

    Apache Solr: Authentication bypass possible using a fake URL Path ending

    Improper Authentication vulnerability in Apache Solr. Solr instances using the PKIAuthenticationPlugin, which is enabled by default when Solr Authentication is used, are vulnerable to Authentication bypass. A fake ending at the end of any Solr API URL path, w…

  • High 8.8
    CVE-2023-50386 Public exploit EPSS 84%

    Apache Solr: Backup/Restore APIs allow for deployment of executables in malicious ConfigSets

    Improper Control of Dynamically-Managed Code Resources, Unrestricted Upload of File with Dangerous Type, Inclusion of Functionality from Untrusted Control Sphere vulnerability in Apache Solr.This issue affects Apache Solr: from 6.0.0 through 8.11.2, from 9.0.…

  • Medium 6.5
    CVE-2023-50290 Public exploit EPSS 68%

    Apache Solr: Host environment variables are published via the Metrics API

    Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Solr. The Solr Metrics API publishes all unprotected environment variables available to each Apache Solr instance. Users are able to specify which environment variables to hide…

  • High 7.1
    CVE-2021-27905 Public exploit EPSS 93%

    SSRF vulnerability with the Replication handler

    The ReplicationHandler (normally registered at "/replication" under a Solr core) in Apache Solr has a "masterUrl" (also "leaderUrl" alias) parameter that is used to designate another ReplicationHandler on another Solr core to replicate index data into the loc…

  • High 7.5
    CVE-2017-3164 Public exploit EPSS 19%

    Server-Side Request Forgery (SSRF) in org.apache.solr:solr-core

    Server Side Request Forgery in Apache Solr, versions 1.3 until 7.6 (inclusive). Since the "shards" parameter does not have a corresponding whitelist mechanism, a remote attacker with access to the server could make Solr perform an HTTP GET request to any reac…

  • Critical 9.8
    CVE-2019-0192 Public exploit EPSS 78%

    Critical severity vulnerability that affects org.apache.solr:solr-core

    In Apache Solr versions 5.0.0 to 5.5.5 and 6.0.0 to 6.6.5, the Config API allows to configure the JMX server via an HTTP POST request. By pointing it to a malicious RMI server, an attacker could take advantage of Solr's unsafe deserialization to trigger remot…