CVE-2026-35054 MEDIUM

CVE-2026-35054: XenForo Stored Cross-Site Scripting via BB Code Rendering

Vendor Xenforo
Product XenForo
Weakness CWE-79 · XSS
Published April 1, 2026
Last update May 24, 2026
View on NVD All CVEs

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

XenForo before 2.3.9 is vulnerable to stored cross-site scripting (XSS) related to BB code rendering. An attacker can inject malicious scripts through BB code that are stored and executed when other users view the content.

Key dates

02Disclosure timeline

April 1, 2026 CVE published
May 24, 2026 Record updated