Cross-Site Request Forgery Vulnerability in Update Blocker Plugin for WordPress
CVE-2025-9634

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Plugin Updates Blocker
Vendor
CVE Published:
11 September 2025

What is CVE-2025-9634?

The Update Blocker plugin for WordPress is susceptible to a Cross-Site Request Forgery (CSRF) vulnerability where inadequate nonce validation exists in the pub_save action handler. This flaw allows unauthenticated attackers to manipulate plugin update settings by tricking an administrator into clicking a malicious link, effectively enabling or disabling updates without proper authorization.

Affected Version(s)

Plugin updates blocker * <= 0.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/plugin-update-...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nabil Irawan
.
CVE-2025-9634 : Cross-Site Request Forgery Vulnerability in Update Blocker Plugin for WordPress