CVE-2026-6963
WP Mail Gateway Plugin Unauthorized SMTP Access
Publication date: 2026-05-02
Last updated on: 2026-05-05
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wp_mail_gateway | wp_mail_gateway | to 1.8 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
This vulnerability can lead to serious impacts including unauthorized modification of SMTP settings and mail redirection.
Attackers with low-level access can escalate their privileges to administrator level by intercepting password reset emails.
This can result in full administrative control over the WordPress site, potentially leading to data breaches, site defacement, or further exploitation.
Can you explain this vulnerability to me?
The WP Mail Gateway plugin for WordPress has a vulnerability due to a missing capability check on the wmg_save_provider_config AJAX action in all versions up to and including 1.8.
This flaw allows authenticated attackers with Subscriber-level access or higher to update SMTP settings and redirect mail.
By exploiting this, attackers can escalate their privileges by triggering a password reset email and using it to gain access to an administrator's account.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
This vulnerability allows authenticated attackers with Subscriber-level access to update SMTP settings and redirect mail, potentially enabling privilege escalation and unauthorized access to administrator accounts.
Such unauthorized access and manipulation of email settings can lead to breaches of confidentiality and integrity of sensitive information, which may impact compliance with standards like GDPR and HIPAA that require protection of personal and health data.
However, the provided information does not explicitly detail the direct effects on compliance with these regulations.