How to fix CVE-2025-6851?

Within 24 hours: Identify all WordPress installations using Broken Link Notifier plugin version 1.3.0 or earlier and disable the plugin immediately. Within 7 days: Update the plugin to version 1.3.1 or later once available, or remove the plugin if unused; test functionality in a staging environment before production deployment. Within 30 days: Conduct a security audit of affected systems to identify any unauthorized requests made through the vulnerability and review web server logs for suspicious activity during the vulnerability window.

Is PHP affected by CVE-2025-6851?

The Broken Link Notifier WordPress plugin contains a Server-Side Request Forgery vulnerability that allows unauthenticated attackers to make unauthorized web requests from your organization's infrastructure to internal or external systems.

CVE-2025-6851

EUVD-2025-21125 HIGH

2025-07-11 [email protected]

7.2

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 16, 2026 - 08:17 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 08:17 euvd

EUVD-2025-21125

Patch Released

Mar 16, 2026 - 08:17 nvd

Patch available

CVE Published

Jul 11, 2025 - 09:15 nvd

HIGH 7.2

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.

Analysis

A SSRF vulnerability in for WordPress is vulnerable to Server-Side Request Forgery in all (CVSS 7.2). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Technical Context

CWE-918 (Server-Side Request Forgery). CVSS 7.2 indicates high severity. Affects for WordPress is vulnerable to Server-Side Request Forgery in all.

Affected Products

['for WordPress is vulnerable to Server-Side Request Forgery in all']

Remediation

Apply the vendor-supplied patch immediately.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1.8

CVSS: +36

POC: 0

CVE-2025-6851 vulnerability details – vuln.today

Back

CVE-2025-6851

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

CVE-2025-6851

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

External POC / Exploit Code