CVE-2023-50386

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 84% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: epss, nvd
Weaponized
9.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 84%
  • Public exploit code is available (Metasploit, ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 84%CVSS: 8.8Exploit: Metasploit · ssvc poc · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.8
EG Score
9.0CRITICALhigh confidence
EG Risk
74
EG Risk 74/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation84% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
84%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

February 9, 2024

Last Modified

April 24, 2025

Advisory Details (2)

Auto-updated Jul 26, 2026
Patch available.
generic

Solr™ Security - Apache Solr

https://solr.apache.org/security.html#cve-2023-50386-apache-solr-backuprestore-apis-allow-for-deployment-of-executables-in-malicious-configsets
generic

oss-security - CVE-2023-50386: Apache Solr: Backup/Restore APIs allow for deployment of executables in malicious ConfigSets

http://www.openwall.com/lists/oss-security/2024/02/09/1

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
lucene-solr—
  • every version up to 3.6.2+dfsg-23: fixed in 3.6.2+dfsg-23
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
lucene-solr—
  • every version up to 3.6.2+dfsg-23: fixed in 3.6.2+dfsg-23
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
lucene-solr—
  • every version up to 3.6.2+dfsg-23: fixed in 3.6.2+dfsg-23
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
lucene-solr—
  • every version up to 3.6.2+dfsg-23: fixed in 3.6.2+dfsg-23
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.apache.solr:solr-core9.0.0 ... 9.4.0 (7 versions)
  • 6.0.0 up to 8.11.3: fixed in 8.11.3
  • 9.0.0 up to 9.4.1: fixed in 9.4.1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 2× in last 7d / 14× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-10-07 23:46 UTCEPSS rescore
  2. 2026-10-06 15:15 UTCEPSS rescore
  3. 2026-09-30 16:35 UTCEG score recompute
  4. 2026-09-24 14:01 UTCEPSS rescore
  5. 2026-09-24 14:01 UTCEPSS rescore
  6. 2026-09-22 14:46 UTCEPSS rescore
  7. 2026-09-22 08:45 UTCOSV refresh
  8. 2026-09-21 20:31 UTCEPSS rescore
  9. 2026-09-20 20:14 UTCEPSS rescore
  10. 2026-09-20 20:14 UTCEPSS rescore
  11. 2026-09-18 19:26 UTCEPSS rescore
  12. 2026-09-17 19:25 UTCEPSS rescore
  13. 2026-09-16 14:06 UTCEPSS rescore
  14. 2026-09-16 05:11 UTCEPSS rescore
  15. 2026-09-07 15:59 UTCEPSS rescore
  16. 2026-09-06 13:46 UTCEPSS rescore
  17. 2026-09-06 13:45 UTCEPSS rescore
  18. 2026-09-05 15:26 UTCEPSS rescore
  19. 2026-09-04 05:04 UTCEPSS rescore
  20. 2026-09-03 05:30 UTCOSV refresh
  21. 2026-09-02 14:10 UTCEPSS rescore
  22. 2026-09-02 14:09 UTCEPSS rescore
  23. 2026-08-30 19:15 UTCEPSS rescore
  24. 2026-08-30 01:20 UTCEPSS rescore
  25. 2026-08-28 21:39 UTCEPSS rescore
Show 75 more
  1. 2026-08-27 14:23 UTCEPSS rescore
  2. 2026-08-26 14:44 UTCEPSS rescore
  3. 2026-08-25 13:46 UTCEPSS rescore
  4. 2026-08-24 14:14 UTCEPSS rescore
  5. 2026-08-20 22:53 UTCEPSS rescore
  6. 2026-08-19 17:02 UTCEPSS rescore
  7. 2026-08-19 17:02 UTCEPSS rescore
  8. 2026-08-16 18:56 UTCOSV refresh
  9. 2026-08-16 02:12 UTCEPSS rescore
  10. 2026-08-15 01:28 UTCEPSS rescore
  11. 2026-08-12 13:49 UTCEPSS rescore
  12. 2026-08-10 23:57 UTCEPSS rescore
  13. 2026-08-08 16:35 UTCEPSS rescore
  14. 2026-08-07 16:25 UTCEPSS rescore
  15. 2026-08-05 19:15 UTCEPSS rescore
  16. 2026-08-02 02:25 UTCEPSS rescore
  17. 2026-08-02 02:25 UTCEPSS rescore
  18. 2026-08-01 13:06 UTCOSV refresh
  19. 2026-07-30 16:26 UTCEPSS rescore
  20. 2026-07-30 16:26 UTCEPSS rescore
  21. 2026-07-30 01:28 UTCEPSS rescore
  22. 2026-07-27 14:10 UTCEPSS rescore
  23. 2026-07-26 14:52 UTCEPSS rescore
  24. 2026-07-24 14:16 UTCEPSS rescore
  25. 2026-07-24 14:16 UTCEPSS rescore
  26. 2026-07-23 02:28 UTCEG score recompute▲ 0.20
  27. 2026-07-22 23:15 UTCEG score recompute▼ 0.20
  28. 2026-07-22 14:06 UTCEPSS rescore
  29. 2026-07-21 15:23 UTCEPSS rescore
  30. 2026-07-21 15:23 UTCEPSS rescore
  31. 2026-07-20 17:06 UTCEPSS rescore
  32. 2026-07-15 16:56 UTCEPSS rescore
  33. 2026-07-15 16:56 UTCEPSS rescore
  34. 2026-07-14 20:10 UTCOSV refresh
  35. 2026-07-11 08:26 UTCEPSS rescore
  36. 2026-07-08 15:13 UTCEPSS rescore
  37. 2026-07-04 06:29 UTCEPSS rescore
  38. 2026-07-04 06:29 UTCEPSS rescore
  39. 2026-07-01 15:05 UTCEPSS rescore
  40. 2026-06-29 14:05 UTCEPSS rescore
  41. 2026-06-28 14:06 UTCEPSS rescore
  42. 2026-06-28 14:06 UTCEPSS rescore
  43. 2026-06-27 03:07 UTCEPSS rescore
  44. 2026-06-26 21:07 UTCOSV refresh
  45. 2026-06-24 14:04 UTCEPSS rescore
  46. 2026-06-24 14:04 UTCEPSS rescore
  47. 2026-06-23 21:31 UTCEPSS rescore
  48. 2026-06-23 21:31 UTCEPSS rescore
  49. 2026-06-21 01:58 UTCEPSS rescore
  50. 2026-06-21 01:58 UTCEPSS rescore
  51. 2026-06-17 17:51 UTCEPSS rescore
  52. 2026-06-15 17:47 UTCEPSS rescore
  53. 2026-06-13 22:59 UTCEPSS rescore
  54. 2026-06-13 22:59 UTCEPSS rescore
  55. 2026-06-12 23:11 UTCEPSS rescore
  56. 2026-06-12 23:10 UTCEPSS rescore
  57. 2026-06-11 13:59 UTCEPSS rescore
  58. 2026-06-10 22:17 UTCEPSS rescore
  59. 2026-06-09 07:30 UTCOSV refresh
  60. 2026-06-05 22:46 UTCEPSS rescore
  61. 2026-06-05 22:46 UTCEPSS rescore
  62. 2026-06-05 06:09 UTCEPSS rescore
  63. 2026-06-05 06:09 UTCEPSS rescore
  64. 2026-06-05 06:09 UTCEPSS rescore
  65. 2026-06-04 13:11 UTCEPSS rescore
  66. 2026-06-04 13:11 UTCEPSS rescore
  67. 2026-06-04 13:11 UTCEPSS rescore
  68. 2026-06-02 20:12 UTCEPSS rescore
  69. 2026-06-02 20:12 UTCEPSS rescore
  70. 2026-06-01 13:51 UTCEPSS rescore
  71. 2026-06-01 13:51 UTCEPSS rescore
  72. 2026-05-31 22:30 UTCEPSS rescore
  73. 2026-05-31 22:30 UTCEPSS rescore
  74. 2026-05-29 13:43 UTCEPSS rescore
  75. 2026-05-28 13:44 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/linux/http/apache_solr_backup_restore✓ verified
    First seen Feb 24, 2024

    Apache Solr Backup/Restore APIs RCE

    Open source ↗
  • GitHub PoCvvmdx/Apache-Solr-RCE_CVE-2023-50386_POC
    First seen Feb 29, 2024

    Apache Solr Backup/Restore APIs RCE Poc (CVE-2023-50386)

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2023-50386?
CVE-2023-50386 is a critical vulnerability published on February 9, 2024. 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…
When was CVE-2023-50386 disclosed?
CVE-2023-50386 was first published on February 9, 2024, with the most recent update on April 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-50386 actively exploited?
CVE-2023-50386 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 84% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-50386?
CVE-2023-50386 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
How do I remediate CVE-2023-50386?
A fix for CVE-2023-50386 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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