CVE-2026-0688CWE-918

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

Medium · published April 2, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
9.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00201 · 9.5th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-04-02T07:39Z
EPSS history
Timeline
  • 02 APR 07:39Z
    Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery
    cvelistv5