CVE-2026-35055

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published4/1/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

xenforo:xenforo

Weaknesses (CWE)

CWE-79

References

https://www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-posts(disclosure@vulncheck.com)

https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.