CVE-2021-42361 Contact Form Email <= 1.3.24 Authenticated Stored Cross-Site Scripting

Q: What is CVE-2021-42361?

CVE-2021-42361 is a medium-severity cross-site scripting vulnerability in Contact Form Email, published on 17 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Q: Is CVE-2021-42361 being exploited?

There is no known exploitation of CVE-2021-42361 in the wild and no public exploit code.

Q: How do I fix CVE-2021-42361?

No fix has been published for CVE-2021-42361 yet. Limit exposure of the affected software until one is available.

Medium 4.8 Published 17 Nov 2021 Updated 14 Feb 2025

Administrators can inject arbitrary web scripts via the name parameter in the Contact Form Email plugin, affecting sites with unfiltered_html disabled.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-42361?

CVE-2021-42361 is a medium-severity cross-site scripting vulnerability in Contact Form Email, published on 17 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The Contact Form Email WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via the name parameter found in the ~/trunk/cp-admin-int-list.inc.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.3.24. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Weakness: CWE-79

Which versions are affected by CVE-2021-42361?

It affects 1 product.

Products include Codepeople Contact Form Email.

How do I fix CVE-2021-42361?

No fix has been published for CVE-2021-42361 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-2021-42361 being exploited?

There is no known exploitation of CVE-2021-42361 in the wild and no public exploit code.

Sources

Also known as GHSA-j24g-fmpx-gq7m.