Detections
Analytics

vBulletin 5.0.x <= 5.7.5 / 6.x <= 6.2.1 Remote Code Execution

critical Web App Scanning Plugin ID 115347

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Synopsis

vBulletin 5.0.x <= 5.7.5 / 6.x <= 6.2.1 Remote Code Execution

Description

vBulletin 5.0.x <= 5.7.5 and 6.x <= 6.2.1 contains an eval injection vulnerability in the vB5_Template_Runtime::runMaths() method within the template runtime that allows unauthenticated remote attackers to execute arbitrary PHP code by supplying crafted input through the pagenav[pagenumber] parameter.

Solution

Upgrade to vBulletin version 6.1.6 Patch Level 1 or 6.2.0 Patch Level 1 or 6.2.1 Patch Level 1 or later.

See Also

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4509358-security-patch-released-for-vbulletin-6-2-1-6-2-0-and-6-1-6

https://karmainsecurity.com/KIS-2026-13

Plugin Details

Severity: Critical

ID: 115347

Type: Check Based

Published: 6/4/2025

Updated: 8/5/2026

Scan Template: basic, full, pci, scan

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.03

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-61511

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS Score Source: CVE-2026-61511

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-61511

Vulnerability Information

CPE: cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 7/26/2026

Reference Information

CVE: CVE-2026-61511