Vulnerability · Published May 2, 2026 · Assigned by Wordfence
CVE-2026-6963WP Mail Gateway <= 1.8 - Missing Authorization to Authenticated (Subscriber+) SMTP Configuration Modification via 'wmg_save_provider_config' AJAX Action
High 8.8
In plain English
A high-severity missing authorization in WP Mail Gateway from shahariaazam. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official description
The WP Mail Gateway plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the wmg_save_provider_config AJAX action in all versions up to, and including, 1.8. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update SMTP settings and redirect mail which can be used for privilege escalation by triggering a password reset email and using that to access and administrator's account.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| shahariaazam | WP Mail Gateway | 0 – through 1.8 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c7caf1f4-a8dd-4016-91eb-2adbeed5290a?source=cve
- https://plugins.trac.wordpress.org/browser/wp-mail-gateway/trunk/src/Functions.php#L111
- https://plugins.trac.wordpress.org/browser/wp-mail-gateway/tags/1.8/src/Functions.php#L111
- https://plugins.trac.wordpress.org/browser/wp-mail-gateway/trunk/src/Bootstrap.php#L47
- https://plugins.trac.wordpress.org/browser/wp-mail-gateway/tags/1.8/src/Bootstrap.php#L47
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3515205%40wp-mail-gateway&new=3515205%40wp-mail-gateway&sfp_email=&sfph_mail=