Overview
This report presents a detailed analysis of the CVE-2025-6993 vulnerability that affects the Ultimate WP Mail plugin for WordPress. This vulnerability can potentially lead to system compromise or data leakage, and as such, poses a significant threat to the security of WordPress websites that use the mentioned plugin. It is of high importance to understand the nature of this vulnerability and apply appropriate mitigations.
Vulnerability Summary
CVE ID: CVE-2025-6993
Severity: High (7.5 CVSS)
Attack Vector: Network
Privileges Required: Low (Contributor-level access)
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Ultimate WP Mail Plugin for WordPress | 1.0.17 to 1.3.6
How the Exploit Works
This vulnerability is rooted in improper authorization within the get_email_log_details() AJAX handler of the Ultimate WP Mail plugin. The handler reads the client-supplied post_id and retrieves the corresponding email log post content (including the password-reset link) without adequately validating the ownership or restricting to administrators. This allows an authenticated attacker with Contributor-level access to obtain an admin’s reset link and elevate their privileges to the administrator level.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited:
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
action=get_email_log_details&post_id=123In this example, the post_id is supplied by the attacker, which would allow them to retrieve the corresponding email log post content, including the password-reset link for the admin user.
Mitigation Guidance
To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it becomes available. In the meantime, use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. Regularly updating and patching the Ultimate WP Mail plugin can help prevent exploitation of such vulnerabilities in the future.
