CVE-2024-8726 MailChimp Forms by MailMunch <= 3.2.3 - Reflected Cross-Site Scripting

What is CVE-2024-8726?

CVE-2024-8726 is a medium-severity cross-site scripting vulnerability in MailChimp Forms by MailMunch, published on 20 Nov 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The MailChimp Forms by MailMunch plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 3.2.3. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Weakness: CWE-79

Which versions are affected by CVE-2024-8726?

It affects 1 product.

Products include Mailmunch Mailchimp Forms.

How do I fix CVE-2024-8726?

No fix has been published for CVE-2024-8726 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-8726 being exploited?

There is no known exploitation of CVE-2024-8726 in the wild and no public exploit code.

Other vulnerabilities in MailChimp Forms by MailMunch

• CVE-2024-29793 WordPress MailChimp Forms by MailMunch plugin <= 3.2.2 - Cross Site Scripting (XSS) vulnerability Medium 6.5
• CVE-2024-31378 WordPress MailChimp Forms by MailMunch plugin <= 3.2.1 - Cross Site Request Forgery (CSRF) vulnerability Medium 5.4
• CVE-2023-40203 WordPress MailChimp Forms by MailMunch plugin <= 3.1.4 - Broken Access Control Medium 4.3
• CVE-2023-45748 WordPress MailChimp Forms by MailMunch Plugin <= 3.1.4 is vulnerable to Cross Site Request Forgery (CSRF) Medium 4.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cq6m-qc88-xjpx.