The CMP – Coming Soon & Maintenance plugin for WordPress is vulnerable to Information Exposure in versions up to, and including, 4.1.6 via the cmp_get_post_detail function. This can allow unauthenticated individuals to obtain the contents of any non-password-protected, published post or page even when maintenance mode is enabled.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-1263
• https://plugins.trac.wordpress.org/browser/cmp-coming-soon-maintenance/tags/4.1.6/niteo-cmp.php#L2759
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e01b4259-ed8d-44a4-9771-470de45b14a8