Description

The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 in the 'MF2::parse_authorpage' function via the 'Receiver::post' 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.

INFO

Published Date :

2026-04-02T07:39:35.655Z

Last Modified :

2026-04-08T16:34:21.028Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0686 vulnerability.

Vendors Products
Pfefferle
  • Webmention
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-0686.

URL Resource
https://github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77a7686489/includes/handler/class-mf2.php#L878 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-receiver.php#L260 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/handler/class-mf2.php#L877 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset/3494831/webmention cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/08d15c46-d15f-4803-80be-90bf33335c18?source=cve cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact