CVE-2023-4213

Name: CVE-2023-4213
Creator: NVD / NIST
Published: 2023-09-13T03:15:08.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2023-4213 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Simplr Registration Form Plus+ plugin for WordPress is vulnerable to Insecure Direct Object References in versions up to, and including, 2.4.5. This is due to the plugin providing user-controlled access to objects, letting a user bypass authorization and access system resources. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

The Simplr Registration Form Plus+ plugin for WordPress is vulnerable to Insecure Direct Object References in versions up to, and including, 2.4.5. This is due to the plugin providing user-controlled access to objects, letting a user bypass authorization and access system resources. This makes it possible for authenticated attackers with subscriber-level permissions or above to change user passwords and potentially take over administrator accounts.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.61%

44.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mikevanwinkle	Simplr Registration Form Plus\+	<= 2.4.5

References

https://plugins.trac.wordpress.org/browser/simplr-registration-form/trunk/lib/profile.php#L148Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/6ddf0452-3afe-4ada-bccc-30c818968a81?source=cveThird Party Advisory
https://plugins.trac.wordpress.org/browser/simplr-registration-form/trunk/lib/profile.php#L148Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/6ddf0452-3afe-4ada-bccc-30c818968a81?source=cveThird Party Advisory

Timeline

Published: Sep 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4213?

How severe is CVE-2023-4213?

CVE-2023-4213 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4213?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4213?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST