CVE-2025-8571— Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page
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I. Basic Information for CVE-2025-8571
Vulnerability Information
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Vulnerability Title
Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page
Source: NVD (National Vulnerability Database)
Vulnerability Description
Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page. Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Fortbridge https://fortbridge.co.uk/ for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Concrete CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Concrete CMS是Concrete CMS开源的一个面向团队的开源内容管理系统。 Concrete CMS 9至9.4.2版本和8.5.21之前版本存在安全漏洞，该漏洞源于会话消息仪表板页面存在反射型跨站脚本漏洞。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Concrete CMS | Concrete CMS | 9.0.0 ~ 9.4.3 | - |
II. Public POCs for CVE-2025-8571
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2025-8571 | https://github.com/chimdi2700/CVE-2025-8571 | POC Details |
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IV. Related Vulnerabilities
Same product: Concrete CMS
- CVE-2026-2994
Concrete CMS below 9.4.8 is vulnerable to CSRF by a Rogue Ad - CVE-2026-3240
Concrete CMS below 9.4.8 is vulnerable to Stored XSS via Leg - CVE-2026-3241
Concrete CMS below version 9.4.8 is vulnerable to a stored c - CVE-2026-3242
Concrete CMS below 9.4.8 is vulnerable to Stored XSS in the - CVE-2026-3244
Concrete CMS below version 9.4.8 is vulnerable to Stored XSS
Same vendor: Concrete CMS
- CVE-2026-2994
Concrete CMS below 9.4.8 is vulnerable to CSRF by a Rogue Ad - CVE-2026-3240
Concrete CMS below 9.4.8 is vulnerable to Stored XSS via Leg - CVE-2026-3241
Concrete CMS below version 9.4.8 is vulnerable to a stored c - CVE-2026-3242
Concrete CMS below 9.4.8 is vulnerable to Stored XSS in the - CVE-2026-3244
Concrete CMS below version 9.4.8 is vulnerable to Stored XSS
Same weakness: CWE-20
V. Comments for CVE-2025-8571
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