Known vulnerabilities in Serial Numbers – Ultimate License Manager for Selling, Licensing & Securely Delivering Digital Content with WooCommerce

An easy way to sell digital products and manage licenses with WooCommerce.

2Reported vulnerabilities

5.3Highest CVSS score

2.3.6Latest version

1,000+Active installs

What to do now

Update Serial Numbers – Ultimate License Manager for Selling, Licensing & Securely Delivering Digital Content with WooCommerce to 2.1.1 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 19, 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-2024-35173	Medium 5.3	—	2.1.0 and earlier	`2.1.1`	May 10, 2024
CVE-2023-46078	Medium 4.3	0.2%	1.6.3 and earlier	`1.6.4`	October 16, 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.