CVE-2023-6957 Fluent Forms <= 5.1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting

Medium 4.9 Published Updated

Authenticated attackers can inject malicious scripts into Fluent Forms pages, potentially leading to session hijacking or site compromise.

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-2023-6957?

CVE-2023-6957 is a medium-severity cross-site scripting vulnerability in techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder, published on 13 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Fluent Forms plugin for WordPress by Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.1.9 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploitation level depends on who is granted the right to create forms by an administrator. This level can be as low as contributor, but by default is admin.

Weakness: CWE-79

Which versions are affected by CVE-2023-6957?

It affects 1 product.

Products include Fluentforms Contact Form.

How do I fix CVE-2023-6957?

No fix has been published for CVE-2023-6957 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-2023-6957 being exploited?

There is no known exploitation of CVE-2023-6957 in the wild and no public exploit code.

Sources

Also known as GHSA-q59r-5wq2-qxqq.

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