CVE-2023-6875

CRITICAL 9.8CVE-2023-6875 · Published 11/01/2024 · updated 17/06/2026

Package	Affected versions	Patched versions
post smtp wpexperts	`≤ 2.8.7`	No fix yet

Description

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauthorized access of data and modification of data due to a type juggling issue on the connect-app REST endpoint in all versions up to, and including, 2.8.7. This makes it possible for unauthenticated attackers to reset the API key used to authenticate to the mailer and view logs, including password reset emails, allowing site takeover. CVE-2023-52233 appears to be a duplicate of this issue.

References

plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Mobile/includes/rest-api/v1/rest-api.php · Issue Tracking
plugins.trac.wordpress.org/changeset/3016051/post-smtp/trunk · Product
wordfence.com/threat-intel/vulnerabilities/id/e675d64c-cbb8-4f24-9b6f-2597a97b49af · Third Party Advisory
packetstormsecurity.com/files/176525/WordPress-POST-SMTP-Mailer-2.8.7-Authorization-Bypass-Cross-Site-Scripting.html · Third Party Advisory

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