CVE-2026-0688
Webmention <= 5.6.2 - Authenticated (Subscriber+) Server-Side Request Forgery
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | pfefferle |
| Product | webmention |
| Published | Apr 2, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
pfefferle / Webmention
0 ≤ 5.6.2
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/02c9beba-dfa5-4a30-8355-62ff9a2630f7?source=cve github.com: https://github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77a7686489/includes/class-tools.php#L81 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-tools.php#L81 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3494831/webmention
Credits
Duong Quang Hao