WordPress <= 6.9.1 - Unauthenticated Blind Server-Side Request Forgery via XML-RPC Pingback Discovery
| CVSS | 5.8 (Medium) |
|---|---|
| Publicly Published | March 10, 2026 |
| Last Updated | March 10, 2026 |
| Researcher |
sibwtf
|
Description
WordPress core is vulnerable to Blind Server-Side Request Forgery in all versions up to and including 6.9.1. This is due to the `WP_HTTP_IXR_Client` class using `wp_remote_post()` instead of the safer `wp_safe_remote_post()` when making outgoing XML-RPC pingback requests. This makes it possible for unauthenticated attackers to make web requests to arbitrary internal locations originating from the WordPress server, which can be used to query and modify information from internal services.
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Vulnerability Details for WordPress
| Software Type | Core |
|---|---|
| Patched? | Yes |
| Remediation | Update to one of the following versions, or a newer patched version: 6.8.4, 6.9.2 |
| Affected Versions |
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| Patched Versions |
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