Description

XenForo before 2.3.9 and before 2.2.18 is vulnerable to cross-site scripting (XSS) related to lightbox usage in posts. An attacker can inject malicious scripts that execute when users interact with post content displayed in the lightbox.

INFO

Published Date :

2026-04-01T00:30:13.058Z

Last Modified :

2026-04-01T15:51:58.760Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35055 vulnerability.

Vendors Products
Xenforo
  • Xenforo
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35055.

URL Resource
https://www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-posts cve-icon cve-icon
https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact