How severe is CVE-2025-4334?

CVE-2025-4334 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-4334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4334?

CVE-2025-4334 affects Najeebmedia Simple User Registration. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4334?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-4334 have an EU (EUVD) identifier?

Yes. CVE-2025-4334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19388.

When was CVE-2025-4334 published?

CVE-2025-4334 was published on 2025-06-26 and last updated on 2026-06-17.

CVE-2025-4334

CVE-2025-4334 is a critical-severity vulnerability in Najeebmedia Simple User Registration with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19388
Weakness: CWE-269
Affected product: Najeebmedia Simple User Registration
Published: 2025-06-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-4334?: 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.
How severe is CVE-2025-4334?: CVE-2025-4334 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-4334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4334?: CVE-2025-4334 affects Najeebmedia Simple User Registration. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-4334 have an EU (EUVD) identifier?: Yes. CVE-2025-4334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19388.
When was CVE-2025-4334 published?: CVE-2025-4334 was published on 2025-06-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:najeebmedia:simple_user_registration:*:*:*:*:*:wordpress:*:*

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