SSRF in Pfefferle Webmention
CVE-2026-0688
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 a…
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.000 (10.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Pfefferle Webmention — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-0688?
- CVE-2026-0688 is a medium-severity vulnerability in Pfefferle Webmention, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2026-04-02.
- How severe is CVE-2026-0688?
- Medium severity. CVSS v3 base score is 6.4 out of 10.