Known vulnerabilities in Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

🤩 Make popups & optin forms to get more email newsletter subscribers, leads, and sales - #1 most popular popup builder plugin! 🚀

5Reported vulnerabilities

8.2Highest CVSS score

2.17.1Latest version

1,000,000+Active installs

What to do now

Update Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation to 2.16.2 or later. 5 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 14, 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-2021-39341	High 8.2	21.9%	2.6.4 and earlier	`2.6.5`	November 1, 2021
CVE-2023-0772	Medium 6.5	0.8%	Before 2.12.2	`2.12.2`	March 13, 2023
CVE-2021-39325	Medium 6.1	0.9%	2.6.0 and earlier	`2.6.1`	September 20, 2021
CVE-2016-10996	Medium 5.3	1.1%	Before 1.1.4.6	`1.1.4.6`	September 20, 2019
CVE-2024-4045	Medium 5.4	0.3%	Before 2.16.2	`2.16.2`	May 25, 2024

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