WordPress plugin
Custom New User Notification security & vulnerabilities
Unpatched vulnerability in the latest version
At least one vulnerability affects the latest version and no fix has been released. Deactivate the plugin or restrict access to the affected feature until the vendor ships a patch.
- Critical0
- High0
- Medium1
- Low0
All Custom New User Notification vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting via 'User Mail Subject' Setting ≤1.2.0No patch available | CVE-2026-3551 |
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting via 'User Mail Subject' Setting
≤1.2.0No patch available
Custom New User Notification: common questions
Does Custom New User Notification have known vulnerabilities?
Yes. VulnCrest Radar lists 1 known vulnerability in Custom New User Notification: 1 medium. At least one is not fixed in the latest version.
How do I check which version of Custom New User Notification 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 Custom New User Notification vulnerability?
CVE-2026-3551, published Apr 15, 2026: Custom New User Notification <= 1.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'User Mail Subject' Setting. Severity: Medium (CVSS 4.4).
Is any Custom New User Notification vulnerability listed in CISA KEV?
No. None of the known Custom New User Notification vulnerabilities is currently listed in the CISA KEV catalog.