CVE-2023-43187

CRITICALNVD 9.89.8—

9.8

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: 99.5%
KEV: Not listed

Published

September 27, 2023

Last Modified

November 21, 2024

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.

CWE-91XML Injection

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 17:01 UTCEG score recompute
2026-05-24 17:01 UTCGHSA enrichment

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 November 21, 2024. 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 99.5% 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.

Dependency Blast Radius

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