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Type a plugin or theme and the version you run, and we’ll show every known vulnerability that affects it, from the 390,007 records in our vulnerability database. The version is listed under Plugins in your WordPress dashboard.
Plugin · webmention
Webmention
3 known vulnerabilities on record. Add your version above to see which ones affect you.
Jun 30, 2026Webmention: Stored Cross-Site ScriptingCVE-2026-10513 · affects up to 5.8.0 · reported by WordfenceHigh 7.2
The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the unauthenticated webmention REST endpoint and rendered directly into HTML 'value' attributes by the edit-comment-form template without esc_attr() or esc_url(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a privileged user (moderator or administrator) opens the affected comment edit screen.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Apr 2, 2026Webmention: Server-Side Request ForgeryCVE-2026-0688 · affects up to 5.6.2 · reported by WordfenceMedium 6.4
The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 via the 'Tools::read' function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
Apr 2, 2026Webmention: Server-Side Request ForgeryCVE-2026-0686 · affects up to 5.6.2 · reported by WordfenceHigh 7.2
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.
Versions are matched against the affected ranges published with each record. A plugin can ship a fix under its own numbering, so if something looks off, check the linked record. Want the whole site checked at once? Run the free website check.
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