CVE-2021-4367 Flo Forms – Easy Drag & Drop Form Builder <= 1.0.35 - Options Change to Stored Cross-Site Scripting
Authenticated attackers can inject arbitrary scripts via form options, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-4367?
CVE-2021-4367 is a medium-severity cross-site scripting vulnerability in flothemesplugins Flo Forms – Easy Drag & Drop Form Builder, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Options Change by using the flo_import_forms_options AJAX action in versions up to, and including, 1.0.35 due to insufficient input sanitization and output escaping along with missing capability checks. This makes it possible for authenticated attackers, like subscribers, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2021-4367?
It affects 1 product.
Products include Flothemes Flo Forms.
How do I fix CVE-2021-4367?
No fix has been published for CVE-2021-4367 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-2021-4367 being exploited?
There is no known exploitation of CVE-2021-4367 in the wild and no public exploit code.
Other vulnerabilities in flothemesplugins Flo Forms – Easy Drag & Drop Form Builder
Sources
Also known as GHSA-vxfg-h569-q838.