Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-22444— Apache Solr: Insufficient file-access checking in standalone core-creation requests

Quick assessment

Affected
Apache Software Foundation Apache Solr
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Solr是美国阿帕奇（Apache）基金会的一款基于Lucene（一款全文搜索引擎）的搜索服务器。该产品支持层面搜索、垂直搜索、高亮显示搜索结果等。 Apache Solr 8.6版本至9.10.0版本存在安全漏洞，该漏洞源于创建核心API对某些参数输入验证不足，可能导致用户使用意外配置集创建核心，或在Windows系统上泄露NTLM用户哈希。

AI Predicted 9.1 Difficulty: Easy EPSS 0.73% · P53
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-22444

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Apache Solr: Insufficient file-access checking in standalone core-creation requests
Source: CVE Program / CVE List V5
Vulnerability 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.apache.org/guide/solr/latest/deployment-guide/rule-based-authorization-plugin.html is disabled, or if it is enabled but the "core-admin-edit" predefined permission (or an equivalent custom permission) is given to low-trust (i.e. non-admin) user roles. Users can mitigate this by enabling Solr's RuleBasedAuthorizationPlugin (if disabled) and configuring a permission-list that prevents untrusted users from creating new Solr cores.  Users should also upgrade to Apache Solr 9.10.1 or greater, which contain fixes for this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Solr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Solr是美国阿帕奇（Apache）基金会的一款基于Lucene（一款全文搜索引擎）的搜索服务器。该产品支持层面搜索、垂直搜索、高亮显示搜索结果等。 Apache Solr 8.6版本至9.10.0版本存在安全漏洞，该漏洞源于创建核心API对某些参数输入验证不足，可能导致用户使用意外配置集创建核心，或在Windows系统上泄露NTLM用户哈希。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Solr 8.6 ~ 9.10.0 -

II. Public POCs for CVE-2026-22444

# POC Description Source Link Shenlong Link
1 PoC for CVE-2026-22444: Apache Solr 8.6-9.10.0 Windows standalone mode RCE/NTLM hash disclosure https://github.com/dptsec/CVE-2026-22444 POC Details
2 CVE-2026-22444 是一个影响 Apache Solr 的安全漏洞，于 2026 年 1 月 20 日左右公开披露。该漏洞源于 Apache Solr 的 "create core" API 在某些 API 参数上的输入验证不足（CWE-20: Improper Input Validation），允许攻击者在 Solr 运行于 "standalone" 模式时绕过安全规则，可能导致数据泄露、远程代码执行 (RCE) 或 NTLM 哈希披露。 https://github.com/bfdfhdsfdd-crypto/CVE-2026-22444 POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-22444

请登录查看更多情报信息。

Mailing List Discussions for CVE-2026-22444 (1)

IV. Related Vulnerabilities

Same product: Apache Solr
Same vendor: Apache Software Foundation
Same weakness: CWE-20

V. Comments for CVE-2026-22444

No comments yet

Leave a comment