CVE-2023-5098

Name: CVE-2023-5098
Creator: NVD / NIST
Published: 2023-10-31T14:15:12.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2023-5098 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. The Campaign Monitor Forms by Optin Cat WordPress plugin before 2.5.6 does not prevent users with low privileges (like subscribers) from overwriting any options on a site with the string "true", which could lead to a variety of outcomes, including DoS.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

The Campaign Monitor Forms by Optin Cat WordPress plugin before 2.5.6 does not prevent users with low privileges (like subscribers) from overwriting any options on a site with the string "true", which could lead to a variety of outcomes, including DoS.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.58%

43.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Fatcatapps	Campaign Monitor Optin Cat	< 2.5.6

References

https://wpscan.com/vulnerability/3167a83c-291e-4372-a42e-d842205ba722Exploit, Third Party Advisory
https://wpscan.com/vulnerability/3167a83c-291e-4372-a42e-d842205ba722Exploit, Third Party Advisory

Timeline

Published: Oct 31, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5098?

How severe is CVE-2023-5098?

CVE-2023-5098 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5098?

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-2023-5098?

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

Scan your code now

Source: NVD / NIST