Known vulnerabilities in JSON API User

Extends the JSON API Plugin to allow RESTful user registration, authentication & many other User Meta, BP functions. A Pro version is also available.

2Reported vulnerabilities

9.8Highest CVSS score

4.1.3Latest version

1,000+Active installs

What to do now

Update JSON API User to 4.1.2 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 17, 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-2024-6624	Critical 9.8	2.9%	Before 3.9.4	`3.9.4`	July 11, 2024
CVE-2026-9626	Medium 6.4	0.4%	0 to 4.1.0 (inclusive)	`4.1.2`	July 3, 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.