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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (49.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.006 · change: -0.000
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/0f76c9f8-c57a-4875-b581-f67c9… (Third Party Advisory)
- plugins.trac.wordpress.org/changeset (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.