CVE-2020-23837

Name: CVE-2020-23837
Creator: NVD / NIST
Published: 2020-09-25T04:23:03.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.82%

Last modified Jun 17, 2026

CVE-2020-23837 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A Cross-Site Request Forgery (CSRF) vulnerability in the Multi User plugin 1.8.2 for GetSimple CMS allows remote attackers to add admin (or other) users after an authenticated admin visits a third-party site or clicks on a URL.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.

Description

A Cross-Site Request Forgery (CSRF) vulnerability in the Multi User plugin 1.8.2 for GetSimple CMS allows remote attackers to add admin (or other) users after an authenticated admin visits a third-party site or clicks on a URL.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.82%

52.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Multi User Project	Multi User	1.8.2

References

http://get-simple.info/extend/plugin/multi-user/133/Third Party Advisory
https://www.exploit-db.com/exploits/48745Exploit, Third Party Advisory, VDB Entry
http://get-simple.info/extend/plugin/multi-user/133/Third Party Advisory
https://www.exploit-db.com/exploits/48745Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Sep 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23837?

How severe is CVE-2020-23837?

CVE-2020-23837 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23837?

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-2020-23837?

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

Scan your code now

Source: NVD / NIST