Software intelligence
Important: Webmention appearing in this catalog does not mean your website is affected. Exposure depends on your installed version. How SiteRespond intelligence works
Tracked advisories
4
Latest advisory
30 June 2026
CISA KEV matches
0
In this WordPress feed
WordPress slug
webmention
Plugin
This catalog lists 4 known advisories affecting Webmention. The most recent was published on 30 June 2026. If you use this software, compare your installed version against the affected ranges on each advisory and update to a fixed release outside those ranges. SiteRespond Defence checks your actual installed version when the plugin is connected — listing here does not by itself mean your site is vulnerable.
Webmention <= 5.8.0 - Unauthenticated Stored Cross-Site Scripting via MF2 'photo'/'url' Author Properties
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Published 30 June 2026
Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery
This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Published 1 April 2026
Webmention <= 5.6.2 - Unauthenticated Blind Server-Side Request Forgery
This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Published 1 April 2026
Known Webmention advisories published by month.
CVE-2026-10513 · Published 30 June 2026
Affected versions: ≤ 5.8.0
CVE-2026-0688 · Published 1 April 2026
Affected versions: ≤ 5.6.2
CVE-2026-0686 · Published 1 April 2026
Affected versions: ≤ 5.6.2
No CVE assigned · Published 8 March 2023
Affected versions: ≤ 4.0.8
SiteRespond Defence matches your installed Webmention version against this catalog when the Defence plugin is connected to your WordPress site.