CVE-2023-40203

Name: CVE-2023-40203
Creator: NVD / NIST
Published: 2024-12-13T15:15:21.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2023-40203 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Missing Authorization vulnerability in MailMunch MailChimp Forms by MailMunch allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MailChimp Forms by MailMunch: from n/a through 3.1.4.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

Missing Authorization vulnerability in MailMunch MailChimp Forms by MailMunch allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MailChimp Forms by MailMunch: from n/a through 3.1.4.

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

0.56%

42.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Mailmunch	Mailchimp Forms	< 3.1.5

References

https://patchstack.com/database/wordpress/plugin/mailchimp-forms-by-mailmunch/vulnerability/wordpress-mailchimp-forms-by-mailmunch-plugin-3-1-4-broken-access-control?_s_id=cveThird Party Advisory

Timeline

Published: Dec 13, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40203?

How severe is CVE-2023-40203?

CVE-2023-40203 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40203?

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-2023-40203?

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

Scan your code now

Source: NVD / NIST