Known vulnerabilities in CM E-Mail Blacklist – Simple email filtering for safer registration

Block unwanted email registrations on your site with this email blacklist plugin. Protect your site by preventing spam sign-ups.

3Reported vulnerabilities

8.1Highest CVSS score

1.6.5Latest version

700+Active installs

What to do now

Update CM E-Mail Blacklist – Simple email filtering for safer registration to 1.6.3 or later. 3 of these have a fixed version available. Updating resolves them.

Plugin last updated: May 23, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2024-5167	High 8.1	0.3%	Before 1.4.9	`1.4.9`	July 13, 2024
CVE-2025-24694	Medium 6.1	0.4%	1.5.5 and earlier	`1.5.6`	February 3, 2025
CVE-2026-0691	Medium 4.4	0.3%	0 to 1.6.2 (inclusive)	`1.6.3`	January 17, 2026

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.