CVE-2023-43187

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because EPSS predicts 88% probability of exploitation within the next 30 days (top 0.5% of all CVEs). NVD baseline CVSS 9.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 45%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A remote code execution (RCE) vulnerability in the xmlrpc.php endpoint of NodeBB Inc NodeBB forum software prior to v1.18.6 allows attackers to execute arbitrary code via crafted XML-RPC requests.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
98.6%
KEV
Not listed

Published

September 27, 2023

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated May 24, 2026
No patch confirmed yet.
generic

CVE/CVE-2023-43187 at main · jagat-singh-chaudhary/CVE · GitHub

https://github.com/jagat-singh-chaudhary/CVE/blob/main/CVE-2023-43187

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 31× 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.

  1. 2026-07-11 08:26 UTCEPSS rescore
  2. 2026-07-11 08:26 UTCEPSS rescore
  3. 2026-07-09 19:08 UTCEPSS rescore
  4. 2026-07-05 02:29 UTCEPSS rescore
  5. 2026-07-01 15:05 UTCEPSS rescore
  6. 2026-06-30 23:21 UTCEPSS rescore
  7. 2026-06-30 23:21 UTCEPSS rescore
  8. 2026-06-28 04:55 UTCEPSS rescore
  9. 2026-06-28 04:55 UTCEPSS rescore
  10. 2026-06-27 09:34 UTCOSV refresh
  11. 2026-06-27 03:07 UTCEPSS rescore
  12. 2026-06-27 03:07 UTCEPSS rescore
  13. 2026-06-25 13:48 UTCEPSS rescore
  14. 2026-06-25 13:48 UTCEPSS rescore
  15. 2026-06-23 21:31 UTCEPSS rescore
  16. 2026-06-23 21:31 UTCEPSS rescore
  17. 2026-06-22 14:24 UTCEPSS rescore
  18. 2026-06-22 14:24 UTCEPSS rescore
  19. 2026-06-21 01:58 UTCEPSS rescore
  20. 2026-06-21 01:58 UTCEPSS rescore
  21. 2026-06-18 17:51 UTCEPSS rescore
  22. 2026-06-17 17:51 UTCEPSS rescore
  23. 2026-06-17 17:51 UTCEPSS rescore
  24. 2026-06-16 17:51 UTCEPSS rescore
  25. 2026-06-16 17:51 UTCEPSS rescore
Show 36 more
  1. 2026-06-15 17:47 UTCEPSS rescore
  2. 2026-06-15 17:47 UTCEPSS rescore
  3. 2026-06-13 22:59 UTCEPSS rescore
  4. 2026-06-13 22:59 UTCEPSS rescore
  5. 2026-06-12 23:10 UTCEPSS rescore
  6. 2026-06-12 23:10 UTCEPSS rescore
  7. 2026-06-10 22:17 UTCEPSS rescore
  8. 2026-06-10 13:21 UTCEPSS rescore
  9. 2026-06-10 13:21 UTCEPSS rescore
  10. 2026-06-09 19:47 UTCOSV refresh
  11. 2026-06-08 14:16 UTCEPSS rescore
  12. 2026-06-08 14:16 UTCEPSS rescore
  13. 2026-06-06 13:46 UTCEPSS rescore
  14. 2026-06-06 13:46 UTCEPSS rescore
  15. 2026-06-05 22:46 UTCEPSS rescore
  16. 2026-06-05 22:46 UTCEPSS rescore
  17. 2026-06-05 06:09 UTCEPSS rescore
  18. 2026-06-05 06:09 UTCEPSS rescore
  19. 2026-06-05 06:09 UTCEPSS rescore
  20. 2026-06-04 13:11 UTCEPSS rescore
  21. 2026-06-04 13:11 UTCEPSS rescore
  22. 2026-06-02 20:12 UTCEPSS rescore
  23. 2026-06-02 20:12 UTCEPSS rescore
  24. 2026-06-01 13:51 UTCEPSS rescore
  25. 2026-06-01 13:51 UTCEPSS rescore
  26. 2026-05-31 22:30 UTCEPSS rescore
  27. 2026-05-31 22:29 UTCEPSS rescore
  28. 2026-05-31 00:15 UTCEPSS rescore
  29. 2026-05-31 00:15 UTCEPSS rescore
  30. 2026-05-28 13:44 UTCEPSS rescore
  31. 2026-05-28 13:43 UTCEPSS rescore
  32. 2026-05-26 07:18 UTCEPSS rescore
  33. 2026-05-26 07:18 UTCEPSS rescore
  34. 2026-05-26 07:18 UTCEPSS rescore
  35. 2026-05-24 17:01 UTCEG score recompute
  36. 2026-05-24 17:01 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2023/CVE-2023-43187.yaml
    First seen Jan 1, 2023

    NodeBB XML-RPC Request xmlrpc.php - XML Injection

    Open source ↗

Frequently asked(5)

What is CVE-2023-43187?
CVE-2023-43187 is a critical vulnerability published on September 27, 2023. A remote code execution (RCE) vulnerability in the xmlrpc.php endpoint of NodeBB Inc NodeBB forum software prior to v1.18.6 allows attackers to execute arbitrary code via crafted XML-RPC requests.
When was CVE-2023-43187 disclosed?
CVE-2023-43187 was first published in the National Vulnerability Database on September 27, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-43187 actively exploited?
CVE-2023-43187 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-43187?
CVE-2023-43187 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-43187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43187, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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