CVE-2026-22444
7.1 · HIGHOverview
CVE-2026-22444 is a high-severity vulnerability affecting apache solr. It was published on January 21, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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 setting https://https://solr.apache.org/guide/solr/latest/configuration-guide/configuring-solr-xml.html#the-solr-element . These read-only accesses can allow users to create cores using unexpected configsets if any are accessible via the filesystem. On Windows systems configured to allow UNC paths this can additionally cause disclosure of NTLM "user" hashes.
Solr deployments are subject to this vulnerability if they meet the following criteria:
* Solr is running in its "standalone" mode.
* Solr's "allowPath" setting is being used to restrict file access to certain directories.
* Solr's "create core" API is exposed and accessible to untrusted users. This can happen if Solr's RuleBasedAuthorizationPlugin https://solr.ap
Remediation
Check the references section for vendor advisories and patches from apache. Update solr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| apache | solr | >= 8.6.0, < 9.10.1 | Affected |
Frequently Asked Questions
What is CVE-2026-22444?
CVE-2026-22444 is a high-severity vulnerability affecting apache solr. It was published on January 21, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2026-22444?
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-22444?
Check the references section for vendor advisories and patches from apache. Update solr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-22444?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-22444 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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