CVE-2026-9357CWE-79CWE-94

vBulletin Login cross site scripting

Medium · published May 24, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
31.5
In the wild
Unconfirmed
What it is

A vulnerability was found in vBulletin 6.x. This impacts an unknown function of the component Login. Performing a manipulation results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been made public and could be used. VulDB is withholding an extended redistribution of exploit details to prevent simplified exploitation. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00386 · 31.5th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-05-24T05:15Z
EPSS history
Timeline
  • 24 MAY 05:15Z
    vBulletin Login cross site scripting
    cvelistv5