Webmention

webmention · plugin

Known security vulnerabilities for Webmention. Find out in seconds which version runs on your site with WP Lens.

3 known vulnerabilities

2 exploitable without logging in · latest Jun 30, 2026

Listed on wordpress.org · latest 5.9.1 · last updated Aug 31, 2026 · 900+ installs

wordpress.org status checked on Oct 2, 2026

Vulnerabilities

CVE-2026-10513unauthenticated≤ 5.8.0
Webmention <= 5.8.0 - Unauthenticated Stored Cross-Site Scripting via MF2 'photo'/'url' Author Properties
High 7.2
CVE-2026-0686unauthenticated≤ 5.6.2
Webmention <= 5.6.2 - Unauthenticated Blind Server-Side Request Forgery
High 7.2
CVE-2026-0688subscriber+≤ 5.6.2
Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery
Medium 6.4

The access label is read from the record's own text (e.g. “subscriber+”: subscriber and above). When the text names no role, CVSS decides between “login required” and “high privilege”; no role name is invented. “Needs a click”: the attack depends on a logged-in user following a link (CSRF, reflected XSS).

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