Description
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 9.0.0 before 9.4.1.
In the affected versions, Solr ConfigSets accepted Java jar and class files to be uploaded through the ConfigSets API.
When backing up Solr Collections, these configSet files would be saved to disk when using the LocalFileSystemRepository (the default for backups).
If the backup was saved to a directory that Solr uses in its ClassPath/ClassLoaders, then the jar and class files would be available to use with any ConfigSet, trusted or untrusted.
When Solr is run in a secure way (Authorization enabled), as is strongly suggested, this vulnerability is limited to extending the Backup permissions with the ability to add libraries.
Users are recommended to upgrade to version 8.11.3 or 9.4.1, which fix the issue.
In these versions, the following protections have been added:
* Users are no longer able to upload files to a configSet that could be executed via a Java ClassLoader.
* The Backup API restricts saving backups to directories that are used in the ClassLoader.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Solr | 6.0.0 – ≤ 8.11.2, 9.0.0 – < 9.4.1 | 9.4.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | lucene-solr | 3.6.2+dfsg-23 | — |
| Debian 13 | lucene-solr | 3.6.2+dfsg-23 | — |
| Debian 12 | lucene-solr | 3.6.2+dfsg-23 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
-
Apache Solr Backup/Restore APIs RCE
exploit/linux/http/apache_solr_backup_restore
GitHub 1 repository
-
vvmdx/Apache-Solr-RCE_CVE-2023-50386_POC ★ 64 · Feb 29, 2024
Apache Solr Backup/Restore APIs RCE Poc (CVE-2023-50386)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.solr:solr-core | >= 6.0.0, < 8.11.3 | 8.11.3 | GHSA-37vr-vmg4-jwpw |
| Maven | org.apache.solr:solr-core | >= 9.0.0, < 9.4.1 | 9.4.1 | GHSA-37vr-vmg4-jwpw |
Advisories 2
- WID-SEC-2024-0340 Apache Solr: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 14, 2025
- WID-SEC-2024-0868 Oracle Construction and Engineering: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 16, 2024