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CVE-2025-6851— Broken Link Notifier <= 1.3.0 - Unauthenticated Server-Side Request Forgery

Quick assessment

Affected
apos37 Broken Link Notifier
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Broken Link Notifier 1.3.0及之前版本存在代码问题漏洞，该漏洞源于服务器端请求伪造，可能导致内部服务信息泄露或修改。

CVSS 7.2 · High EPSS 0.65% · P49

Public Exploits 1

Nuclei · 1 CVE-2025-6851.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-6851

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Broken Link Notifier <= 1.3.0 - Unauthenticated Server-Side Request Forgery
Source: CVE Program / CVE List V5
Vulnerability Description
The Broken Link Notifier plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.3.0 via the ajax_blinks() function which ultimately calls the check_url_status_code() function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Broken Link Notifier 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Broken Link Notifier 1.3.0及之前版本存在代码问题漏洞，该漏洞源于服务器端请求伪造，可能导致内部服务信息泄露或修改。
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
apos37 Broken Link Notifier * ~ 1.3.0 -

II. Public POCs for CVE-2025-6851

# POC Description Source Link Shenlong Link
1 The Broken Link Notifier plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.3.0 via the ajax_blinks() function which ultimately calls the check_url_status_code() function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-6851.yaml POC Details
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III. Intelligence Information for CVE-2025-6851

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IV. Related Vulnerabilities

Same product: Broken Link Notifier
Same vendor: apos37
Same weakness: CWE-918

V. Comments for CVE-2025-6851

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