What is CVE-2025-6851?

CVE-2025-6851 is a high-severity vulnerability in Apos37 Broken Link Notifier, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2025-07-11.

How severe is CVE-2025-6851?

High severity. CVSS v3 base score is 7.2 out of 10.

SSRF in Apos37 Broken Link Notifier

CVE-2025-6851

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Apos37 Broken Link Notifier — versions 0
Pluginrx Broken_link_notifier

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2025-6851?: CVE-2025-6851 is a high-severity vulnerability in Apos37 Broken Link Notifier, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2025-07-11.
How severe is CVE-2025-6851?: High severity. CVSS v3 base score is 7.2 out of 10.