CVE-2025-4334: najeebmedia memberhero Improper Privilege Management
Vulnerability summary
CVE-2025-4334 is a critical (CVSS 9.8) Improper Privilege Management vulnerability in najeebmedia memberhero. EPSS estimates a 2.59% chance of exploitation in the next 30 days, higher than 85% of scored vulnerabilities. Fixed in 6.4.
Timeline
- 26-06-2025PublishedVulnerability first disclosed.
- 08-04-2026Last modifiedVulnerability information updated.
Description
The Simple User Registration plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3. This is due to insufficient restrictions on user meta values that can be supplied during registration. This makes it possible for unauthenticated attackers to register as an administrator.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- wordfenceSource9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.59%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
+0.32 pp
From 2.27% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Najeebmedia1 product
- memberhero≤ 6.3
Nmedia1 product
Wordpress1 product
- wp-registration≤ 6.3 (fixed in 6.4)
3 vendors · 3 products