Which products and versions are affected by CVE-2023-43187?

Affected: Nodebb. The full list is in the CVE brief.

Is CVE-2023-43187 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2023-43187 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-43187?

Public exploit code is available.

Is there a fix for CVE-2023-43187?

Fixed versions are available, including Nodebb 1.18.6.

How urgently should CVE-2023-43187 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Request A Demo

WatchlistCritical

CVE-2023-43187Nodebb Vulnerability

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.

Published Sep 27, 2023 · Updated Aug 12, 2026

Key Facts

Patch immediately

CVE-2023-43187 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Nodebb.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 47% probability of exploitation in the next 30 days.
Fixed versions are available, including Nodebb 1.18.6.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

47%

Higher than 98.8% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

45/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

advisoryhttps://www.cve.org/CVERecord?id=CVE-2023-43187
advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-43187

Description

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.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
NodebbNodebb	See advisory	1.18.6

Patched Releases

Nodebb

1.18.6

Timeline

Publicly disclosed
Sep 27, 2023
Last updated
Aug 12, 2026

Weakness Type

CWE-91 XML Injection (aka Blind XPath Injection)

References

FAQ

Common Questions.

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.
Affected: Nodebb. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Nodebb 1.18.6.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Is CVE-2023-43187 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.