WordPress plugin
JSON API User security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 2 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical1
- High0
- Medium1
- Low0
All JSON API User vulnerabilities
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JSON API User: common questions
Does JSON API User have known vulnerabilities?
Yes. VulnCrest Radar lists 2 known vulnerabilities in JSON API User: 1 critical, 1 medium. None are known to affect version null.
How do I check which version of JSON API User I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent JSON API User vulnerability?
CVE-2026-9626, published Jul 2, 2026: JSON API User <= 4.1.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'content' Parameter. Severity: Medium (CVSS 6.4).
Is any JSON API User vulnerability listed in CISA KEV?
No. None of the known JSON API User vulnerabilities is currently listed in the CISA KEV catalog.