Threat intelligence

Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery

CVE-2026-0688 · webmention

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Webmention at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery
Affected software: webmention(Plugin)
Affected versions: ≤ 5.6.2
Authentication: Authenticated (see advisory title)
Vulnerability type: Other
CVE: CVE-2026-0688
Published: 1 April 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory 02c9beba-dfa5-4a30-8355-62ff9a2630f7). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Webmention version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Webmention advisoriesBack to catalog