High severity7.2NVD Advisory· Published Apr 2, 2026· Updated Apr 27, 2026
CVE-2026-0686
CVE-2026-0686
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3(expand)+ 1 more
- (no CPE)
- (no CPE)range: <=5.6.2
Patches
Vulnerability mechanics
References
5- github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77a7686489/includes/handler/class-mf2.phpnvd
- plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-receiver.phpnvd
- plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/handler/class-mf2.phpnvd
- plugins.trac.wordpress.org/changeset/3494831/webmentionnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/08d15c46-d15f-4803-80be-90bf33335c18nvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (March 30, 2026 to April 5, 2026)Wordfence Blog · Apr 9, 2026