CVE-2025-6851: CWE-918 Server-Side Request Forgery (SSRF) in apos37 Broken Link Notifier
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.
AI Analysis
Technical Summary
The Broken Link Notifier plugin for WordPress (versions up to 1.3.0) contains an SSRF vulnerability (CWE-918) in its ajax_blinks() function, which invokes check_url_status_code(). This flaw allows unauthenticated remote attackers to induce the server to send crafted HTTP requests to arbitrary URLs, potentially accessing or modifying internal network resources. The vulnerability is publicly known and assigned CVE-2025-6851 with a CVSS score of 7.2 (high severity). The vendor has released a patch to remediate this issue.
Potential Impact
An unauthenticated attacker can exploit this SSRF vulnerability to make the server perform HTTP requests to arbitrary locations, including internal network services that may not be directly accessible externally. This can lead to unauthorized information disclosure and modification of internal resources. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users of the Broken Link Notifier plugin should update to the fixed version beyond 1.3.0 as soon as possible to remediate the SSRF issue. No alternative mitigations are specified in the vendor advisory.
CVE-2025-6851: CWE-918 Server-Side Request Forgery (SSRF) in apos37 Broken Link Notifier
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Broken Link Notifier plugin for WordPress (versions up to 1.3.0) contains an SSRF vulnerability (CWE-918) in its ajax_blinks() function, which invokes check_url_status_code(). This flaw allows unauthenticated remote attackers to induce the server to send crafted HTTP requests to arbitrary URLs, potentially accessing or modifying internal network resources. The vulnerability is publicly known and assigned CVE-2025-6851 with a CVSS score of 7.2 (high severity). The vendor has released a patch to remediate this issue.
Potential Impact
An unauthenticated attacker can exploit this SSRF vulnerability to make the server perform HTTP requests to arbitrary locations, including internal network services that may not be directly accessible externally. This can lead to unauthorized information disclosure and modification of internal resources. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users of the Broken Link Notifier plugin should update to the fixed version beyond 1.3.0 as soon as possible to remediate the SSRF issue. No alternative mitigations are specified in the vendor advisory.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-06-27T18:57:21.368Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6870cbcaa83201eaacad5c33
Added to database: 7/11/2025, 8:31:06 AM
Last enriched: 4/9/2026, 9:41:47 PM
Last updated: 5/9/2026, 1:39:11 AM
Views: 180
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