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VULNERABILITIES

CVE-2026-35055 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-posts [email protected]Third Party Advisory
https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/ [email protected]Release Notes

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
xenforo xenforo
< 2.2.18
>= 2.3.0, < 2.3.9

CPE

  • cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-35055
NVD Published Date:
Apr 1, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-35055 Details - Not Deferred