CVE-2021-39353 Easy Registration Forms <= 2.1.1 Cross-Site Request Forgery to Stored Cross-Site Scripting

Q: What is CVE-2021-39353?

CVE-2021-39353 is a high-severity vulnerability in Easy Registration Forms, published on 19 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Q: Is CVE-2021-39353 being exploited?

There is no known exploitation of CVE-2021-39353 in the wild and no public exploit code.

Q: How do I fix CVE-2021-39353?

No fix has been published for CVE-2021-39353 yet. Limit exposure of the affected software until one is available.

High 8.8 Published 19 Nov 2021 Updated 14 Feb 2025

Attackers can exploit missing nonce validation to inject arbitrary scripts via CSRF, potentially leading to code execution.

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

What is CVE-2021-39353?

CVE-2021-39353 is a high-severity vulnerability in Easy Registration Forms, published on 19 Nov 2021. 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 Easy Registration Forms WordPress plugin is vulnerable to Cross-Site Request Forgery due to missing nonce validation via the ajax_add_form function found in the ~/includes/class-form.php file which made it possible for attackers to inject arbitrary web scripts in versions up to, and including 2.1.1.

Weakness: CWE-352

Which versions are affected by CVE-2021-39353?

It affects 1 product.

Products include Easyregistrationforms Easy Registration Forms.

How do I fix CVE-2021-39353?

No fix has been published for CVE-2021-39353 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-39353 being exploited?

There is no known exploitation of CVE-2021-39353 in the wild and no public exploit code.

Sources

Also known as GHSA-9fhm-63v7-pp72.