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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.

PUBLISHED Reserved 2026-04-24 | Published 2026-05-02 | Updated 2026-05-04 | Assigner Wordfence




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2026-04-25:Vendor Notified
2026-05-01:Disclosed

Credits

Nabil Irawan finder

References

www.wordfence.com/...-a8dd-4016-91eb-2adbeed5290a?source=cve

plugins.trac.wordpress.org/...ateway/trunk/src/Functions.php

plugins.trac.wordpress.org/...way/tags/1.8/src/Functions.php

plugins.trac.wordpress.org/...ateway/trunk/src/Bootstrap.php

plugins.trac.wordpress.org/...way/tags/1.8/src/Bootstrap.php

plugins.trac.wordpress.org/...-gateway&sfp_email=&sfph_mail=

cve.org (CVE-2026-6963)

nvd.nist.gov (CVE-2026-6963)

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