CVE-2026-35054— XenForo Stored Cross-Site Scripting via BB Code Rendering
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I. Basic Information for CVE-2026-35054
Vulnerability Information
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Vulnerability Title
XenForo Stored Cross-Site Scripting via BB Code Rendering
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Xenforo 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xenforo是Xenforo公司的一个论坛软件。 XenForo 2.3.9之前版本存在跨站脚本漏洞，该漏洞源于BB代码渲染存在存储型跨站脚本，可能导致攻击者注入恶意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-35054
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · XenForo · 2026-04-01 · 10 CVEs total
| CVE-2025-71279 | 9.8 CRITICAL | XenForo Passkey Security Bypass |
| CVE-2025-71281 | 8.8 HIGH | XenForo Template Method Call Restriction Bypass |
| CVE-2025-71278 | 8.8 HIGH | XenForo OAuth2 Unauthorized Scope Request |
| CVE-2025-71282 | 7.5 HIGH | XenForo Path Disclosure via open_basedir Exceptions |
| CVE-2026-35056 | 7.2 HIGH | XenForo Remote Code Execution via Authenticated Admin |
| CVE-2026-35057 | 6.4 MEDIUM | XenForo Stored Cross-Site Scripting via Structured Text Mentions |
| CVE-2024-58342 | 6.3 MEDIUM | XenForo Open Redirect via getDynamicRedirect |
| CVE-2025-71280 | 6.2 MEDIUM | XenForo Local Account Page Caching Information Disclosure |
| CVE-2026-35055 | 6.1 MEDIUM | XenForo Cross-Site Scripting via Lightbox in Posts |
IV. Related Vulnerabilities
Same product: XenForo
- CVE-2026-35057
XenForo Stored Cross-Site Scripting via Structured Text Ment - CVE-2026-35056
XenForo Remote Code Execution via Authenticated Admin - CVE-2026-35055
XenForo Cross-Site Scripting via Lightbox in Posts - CVE-2025-71282
XenForo Path Disclosure via open_basedir Exceptions - CVE-2025-71281
XenForo Template Method Call Restriction Bypass
Same vendor: XenForo
- CVE-2026-35057
XenForo Stored Cross-Site Scripting via Structured Text Ment - CVE-2026-35056
XenForo Remote Code Execution via Authenticated Admin - CVE-2026-35055
XenForo Cross-Site Scripting via Lightbox in Posts - CVE-2025-71282
XenForo Path Disclosure via open_basedir Exceptions - CVE-2025-71281
XenForo Template Method Call Restriction Bypass
Same weakness: CWE-79
- CVE-2026-8262
Devs Palace ERP Online chart-save cross site scripting - CVE-2026-8256
Devs Palace ERP Online mr-save cross site scripting - CVE-2026-8255
Devs Palace ERP Online add_new_customer cross site scripting - CVE-2026-8254
Devs Palace ERP Online sales_save cross site scripting - CVE-2026-8253
Devs Palace ERP Online purchase_save cross site scripting
V. Comments for CVE-2026-35054
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