CVE-2023-2159

MEDIUM 5.3CVE-2023-2159 · Published 09/06/2023 · updated 17/06/2026

In short

CVE-2023-2159 is a MEDIUM (CVSS 5.3) vulnerability affecting cmp (niteothemes).
Chance of exploitation in the next 30 days (EPSS): 0.77%, higher than 55.8% of all vulnerabilities.
Fix: update to 4.1.8 or later.

Package	Affected versions	Patched versions
cmp niteothemes	`< 4.1.8`	`4.1.8`

Description

The CMP – Coming Soon & Maintenance plugin for WordPress is vulnerable to Maintenance Mode Bypass in versions up to, and including, 4.1.7. A correct cmp_bypass GET parameter in the URL (equal to the md5-hashed home_url in the default setting) allows users to visit a site placed in maintenance mode thus bypassing the plugin's provided feature.

References

plugins.trac.wordpress.org/browser/cmp-coming-soon-maintenance/tags/4.1.6/niteo-cmp.php · Exploit
plugins.trac.wordpress.org/changeset/2900571/cmp-coming-soon-maintenance/tags/4.1.8/cmp-advanced.php · Patch
wordfence.com/threat-intel/vulnerabilities/id/af955f69-b18c-446e-b05e-6a57a5f16dfa · Third Party Advisory

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