CVE-2025-6851

HIGH EXPLOITED NUCLEI

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

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-6851 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.

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.

Nuclei Templates (1)

WordPress Broken Link Notifier < 1.3.1 - Unauthenticated SSRF
HIGHVERIFIEDby iamnoooob,pdresearch
FOFA: body="blnotifier_front_end"

References (2)

Core 2

Scores

CVSS v3 7.2
EPSS 0.0248
EPSS Percentile 85.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2025-07-10
CWE
CWE-918
Status published
Products (2)
apos37/Broken Link Notifier < 1.3.0
pluginrx/broken_link_notifier < 1.3.1
Published Jul 11, 2025
Tracked Since Feb 18, 2026