Known vulnerabilities in Constant Contact Forms

The official Constant Contact plugin adds a contact form to your WordPress site to quickly capture information from visitors.

4Reported vulnerabilities

5.3Highest CVSS score

2.21.0Latest version

20,000+Active installs

What to do now

Update Constant Contact Forms to 2.4.3 or later. 4 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 6, 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-2021-24134	Medium 4.8	0.7%	Before 1.8.8	`1.8.8`	March 18, 2021
CVE-2023-52208	Medium 5.3	0.4%	2.4.2 and earlier	`2.4.3`	January 3, 2024
WF-b8a26695-4793-418b-9a23-6709fe79ea4f	Medium 4.3	—	2.0.2 and earlier	`2.0.3`	June 15, 2023
CVE-2023-34387	Medium 4.3	0.5%	1.14.0 and earlier	`2.0.0`	June 3, 2023

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