CVE-2019-16759

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter...

9.8 CriticalIn KEVPublic exploit

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

99.7%Up 36.6 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Record: CVE-2019-16759
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-94
Updated: 2026-11-02

CVE List 9.8

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Record: CVE-2019-16759
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

EUVDEUVD-2019-7294 9.8

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Record: EUVD-2019-7294
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-c7wq-5768-48mp 9.8

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter...

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Record: GHSA-c7wq-5768-48mp
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20, CWE-94
Updated: 2026-11-02

CISA KEV No score

vBulletin PHP Module Remote Code Execution Vulnerability

The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Record: CVE-2019-16759
Weakness: CWE-94
Updated: 2026-11-02

Affected products

vbulletin

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	vBulletin 5.0 < 5.5.4 - 'widget_php ' Unauthenticated Remote Code Execution	2019-09-23
Metasploit	vBulletin widgetConfig RCE	2019-09-23
PoC in GitHub	M0sterHxck/CVE-2019-16759-Vbulletin-rce-exploit	2019-09-25
PoC in GitHub	jas502n/CVE-2019-16759	2019-09-26
PoC in GitHub	r00tpgp/http-vuln-CVE-2019-16759	2019-09-26
Exploit-DB	vBulletin 5.x - Remote Command Execution (Metasploit)	2019-09-30
PoC in GitHub	theLSA/vbulletin5-rce	2019-10-02
PoC in GitHub	FarjaalAhmad/CVE-2019-16759	2019-10-12
PoC in GitHub	andripwn/pwn-vbulletin	2019-12-29
PoC in GitHub	psychoxploit/vbull	2020-02-20

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Public exploits
Source	Link	Date
PoC in GitHub	polar1s7/CVE-2019-16759-bypass	2020-08-12
PoC in GitHub	nako48/CVE-2019-16759	2020-08-13
PoC in GitHub	0xdims/CVE-2019-16759	2020-08-16
PoC in GitHub	ludy-dev/vBulletin_Routestring-RCE	2020-08-31
PoC in GitHub	fxp0-4tx/CVE-2019-16759	2020-11-29
PoC in GitHub	shavchen/CVE-2019-16759	2022-02-17
Nuclei	vBulletin 5.0.0-5.5.4 - Remote Command Execution

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation, exploits
Nov 2, 2026	first indexed	CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-16759 is a critical vulnerability (CVSS 9.8) in Vbulletin, published September 24, 2019. CISA lists it as known to be exploited, since November 3, 2021. EUVD reports exploitation since November 3, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 99.7%, the 99th percentile. No source names a fixed version.

References

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