CVE-2026-35055

MEDIUM CVSS 6.1 View on NVD ↗

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.

CVSS Vector

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

Affected Products

xenforo/xenforo

References

https://www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-posts
https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/

Published: Apr 01, 2026 01:16 UTC Modified: Apr 01, 2026 18:55 UTC