CVE-2025-6851

Broken Link Notifier <= 1.3.0 - Unauthenticated Server-Side Request Forgery

7.2 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.72%Up 0.7 points since Jul 11, 2025

What each source reports

CVE List Score used 7.2

Broken Link Notifier <= 1.3.0 - Unauthenticated Server-Side Request Forgery

Record: CVE-2025-6851
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-918
Updated: 2026-11-02

EUVDEUVD-2025-21125 7.2

Record: EUVD-2025-21125
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-x4vc-m5g5-663m 7.2

The Broken Link Notifier plugin for WordPress is vulnerable to Server-Side Request Forgery in all...

Record: GHSA-x4vc-m5g5-663m
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-918
Updated: 2026-11-02

NVD 7.2

Record: CVE-2025-6851
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-918
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	WordPress Broken Link Notifier < 1.3.1 - Unauthenticated SSRF

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-6851 is a high vulnerability (CVSS 7.2) in Apos37 Broken Link Notifier, published July 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.72%, the 54th percentile. No source names a fixed version.