WordPress <= 6.9.1 - Unauthenticated Blind Server-Side Request Forgery via XML-RPC Pingback Discovery

5.8
Server-Side Request Forgery (SSRF)
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
  • 6.8 - 6.8.3
  • 6.9 - 6.9.1
Patched Versions
  • 6.8.4
  • 6.9.2

Recent vulnerabilities in WordPress

# Title CVE ID CVSS Researchers Date
1 WordPress <= 6.9.1 - Cross-Site Scripting via Client-Side Template Override in Admin Area 4.4 Asaf Mozes March 10, 2026
2 WordPress <= 6.9.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Navigation Menu Items 4.4 sibwtf March 10, 2026
3 WordPress <= 6.9.1 - Authenticated (Author+) XML External Entity Injection via getID3 Library Media Upload 6.5 Youssef Achtatal March 10, 2026
4 WordPress 6.9 - 6.9.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Note Creation via REST API CVE-2026-3906 4.3 kaminuma March 10, 2026
5 WordPress <= 6.9.1 - Missing Authorization to Authenticated (Author+) Sensitive Information Disclosure via query-attachments AJAX Endpoint 4.3 Vitaly Simonovich March 10, 2026
6 WordPress <= 6.8.2 - Authenticated (Contributor+) Sensitive Information Exposure CVE-2025-58246 4.3 Abu Hurayra (HurayraIIT) September 22, 2025
7 WordPress <= 6.8.2 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2025-58674 6.4 SavPhill (Savphill) September 22, 2025
8 WordPress Core < 6.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via HTML API CVE-2024-6307 6.4 Alex Concha, Dennis Snell, Grzegorz Ziółkowski, Aaron Jorbin June 24, 2024
9 WordPress Core < 6.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Template Part Block CVE-2024-31111 6.4 Rafie Muhammad June 24, 2024
10 WordPress Core < 6.5.5 - Authenticated (Contributor+) Directory Traversal CVE-2024-32111 4.3 apple502j, Rafie Muhammad, Edouard L, David Fifield, x89, mishre June 24, 2024

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