CVE-2026-6963

high

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/c7caf1f4-a8dd-4016-91eb-2adbeed5290a?source=cve

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=

https://plugins.trac.wordpress.org/browser/wp-mail-gateway/trunk/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/Functions.php#L111

https://plugins.trac.wordpress.org/browser/wp-mail-gateway/tags/1.8/src/Bootstrap.php#L47

Details

Source: Mitre, NVD

Published: 2026-05-02

Updated: 2026-05-02

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High