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.
History

Sat, 02 May 2026 05:15:00 +0000

Type Values Removed Values Added
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.
Title WP Mail Gateway <= 1.8 - Missing Authorization to Authenticated (Subscriber+) SMTP Configuration Modification via 'wmg_save_provider_config' AJAX Action
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-02T04:27:45.687Z

Reserved: 2026-04-24T15:46:42.755Z

Link: CVE-2026-6963

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-02T05:16:01.250

Modified: 2026-05-02T05:16:01.250

Link: CVE-2026-6963

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-02T10:15:16Z