CVE-2021-24608 Formidable Form Builder < 5.0.07 - Admin+ Stored Cross-Site Scripting

Medium 4.8 Published Updated

High-privileged users can inject malicious scripts via form labels in Formidable Forms, bypassing unfiltered_html restrictions to execute code or hijack accounts.

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-2021-24608?

CVE-2021-24608 is a medium-severity cross-site scripting vulnerability in Unknown Formidable Form Builder – Contact Form, Survey & Quiz Forms Plugin for WordPress, published on 25 Oct 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The Formidable Form Builder – Contact Form, Survey & Quiz Forms Plugin for WordPress plugin before 5.0.07 does not sanitise and escape its Form's Labels, allowing high privileged users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Weakness: CWE-79

Which versions are affected by CVE-2021-24608?

It affects 1 product.

Products include Strategy11 Formidable Form Builder.

How do I fix CVE-2021-24608?

No fix has been published for CVE-2021-24608 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-2021-24608 being exploited?

There is no known exploitation of CVE-2021-24608 in the wild and no public exploit code.

Sources

Also known as CVE-2021-39330, GHSA-76gr-jrfv-xpv4.

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