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CVE-2025-71310

Quick assessment

Affected
BackdropCMS GDPR cookies module for Backdrop CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Backdrop CMS是Backdrop CMS开源的一个内容管理系统（CMS）。 Backdrop CMS 1.x-1.3.5之前版本存在安全漏洞，该漏洞源于未充分保护访问者免受跨站脚本攻击，如果YouTube服务的可选信息内容字段包含恶意值，可能导致跨站脚本攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.26% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
BackdropCMS GDPR cookies module for Backdrop CMS < 1.x-1.3.5 affected
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I. Basic Information for CVE-2025-71310

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The GDPR cookies module for Backdrop CMS (before 1.x-1.3.5) doesn't sufficiently protect visitors from Cross Site Scripting (XSS) if a malicious value has been provided for the optional 'Info content' field for the YouTube service. This is mitigated by the fact that an attacker must have a role with the permission "Create a GDPR Cookies Service" or "Edit any GDPR Cookies Service" and a site must have added a YouTube service as configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Backdrop CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Backdrop CMS是Backdrop CMS开源的一个内容管理系统（CMS）。 Backdrop CMS 1.x-1.3.5之前版本存在安全漏洞，该漏洞源于未充分保护访问者免受跨站脚本攻击，如果YouTube服务的可选信息内容字段包含恶意值，可能导致跨站脚本攻击。
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
BackdropCMS GDPR cookies module for Backdrop CMS 0 ~ 1.x-1.3.5 -

II. Public POCs for CVE-2025-71310

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-71310

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Vendor Advisories for CVE-2025-71310 (1)

IV. Related Vulnerabilities

Same vendor: BackdropCMS
Same weakness: CWE-80

V. Comments for CVE-2025-71310

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