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CVE-2023-50386 Apache Solr

Affected softwareApache Solr
Severity8.8 High CVSS 3.1 2 scores
Fixed in8.11.3, 9.4.1
WeaknessUnrestricted file upload (CWE-434)
Published9 Feb 2024
Updated17 Jun 2026

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.

CWE-913

Exploitation status

Exploited

Real-world exploitation reported by VulnCheck KEV. CISA has not confirmed it.

  • CISA KEV not listed
  • VulnCheck KEV listed Exploitation reported in the wild. 1 citation · honeypot sightings · earliest 2024-09-18.
  • CISA Vulnrichment exploitation: poc CISA recorded that an exploit has been demonstrated. Automatable: no, technical impact: total.
  • Indexed PoC 2 indexed Published artifacts you can open, in GitHub PoC, Metasploit; first seen 2024-02-29.
  • EPSS 84% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99.7% of all scored CVEs.

VulnCheck KEV

Exploitation evidence from VulnCheck Known Exploited Vulnerabilities (VulnCheck KEV), used under VulnCheck's community terms. View CVE-2023-50386 in VulnCheck (free account).

EvidenceSourceDetailDate
Honeypot sighting VulnCheck canaries Exploitation attempts seen on 1 day 2026-11-13
Reported exploitation media.defense.gov /2024/Sep/18/2003547016/-1/-1/0/CSA-PRC-LINKED-ACTORS-BOTNET.PDF 2024-09-18
IndexArtifactStarsFirst seen
GitHub PoC Apache Solr Backup/Restore APIs RCE Poc (CVE-2023-50386) 64 2024-02-29
Metasploit Apache Solr Backup/Restore APIs RCE (excellent rank)

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

  • Protection none
  • Action unverified
  • Review automated Inferred
  • Record active
Decided by The affected package being open source on Maven, so the fix can be read
Finding This CVE affects an open-source Java library published on Maven Central (Maven packages: org.apache.solr:solr-core), so it is squarely in ARMR's territory and the source needed to understand the defect is public. That makes it a candidate for an ARMR patch rule. No rule exists and none is scheduled: the diff between the affected and fixed versions has not been read, and a closer look may find no hook point ARMR can act on.

CVSS

8.8 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CISA-ADP Secondary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update April 2024 ↗ CPU 2024-Q2 Oracle Construction and Engineering / Document Management (Apache Solr) (19.12.0-19.12.16, 20.12.0-20.12.16, 21.12.0-21.12.17, 22.12.0-22.12.12, 23.12.0-23.12.3)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Construction and Engineering Document Management (Apache Solr) 19.12.0-19.12.16, 20.12.0-20.12.16, 21.12.0-21.12.17, 22.12.0-22.12.12, 23.12.0-23.12.3

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.solr:solr-core 6.0.0 8.11.3 unbounded
org.apache.solr:solr-core 9.0.0 9.4.1 unbounded

Products and versions

2 products, 4 version entries
SourceVendorProductSchemeAffected versions
nvd apache solr generic ≥ 6.0.0 and < 8.11.3 · ≥ 9.0.0 and < 9.4.1
osv org.apache.solr solr-core generic ≥ 6.0.0 and < 8.11.3 · ≥ 9.0.0 and < 9.4.1

References

URLTags
https://github.com/apache/lucene-solr/commit/6c8f24eb9e3fe1cb19058173f2e221de3febfeda WEB
https://github.com/apache/lucene-solr/commit/7e9a2e67f812032a049836c3aa0b18bf5cd717f9 WEB
https://github.com/apache/solr/commit/644dd3a6d6780d71030f7070754d2f3adce22859 WEB
https://github.com/apache/solr/commit/c79011e81dada2f9bc4b4df32ffb32152ef81152 WEB
https://issues.apache.org/jira/browse/SOLR-16949 WEB
https://solr.apache.org/security.html#cve-2023-50386-apache-solr-backuprestore-apis-allow-for-deployment-of-executables-in-malicious-configsets WEB
http://www.openwall.com/lists/oss-security/2024/02/09/1 WEB

Timeline

Published2024-02-09By the CVE Program.
VulnCheck KEV: earliest evidence2024-09-18Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.
NVD record modified2026-06-17NVD's own last-modified date for this record.
VulnCheck KEV: latest evidence2026-11-13Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.