CVE-2025-48484 FreeScout Vulnerable to Stored XSS

Medium 4.6 Published Updated

Attackers can inject malicious scripts via conversation data in FreeScout, potentially stealing sessions or executing code in victim browsers.

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

What is CVE-2025-48484?

CVE-2025-48484 is a medium-severity cross-site scripting vulnerability in freescout-help-desk freescout, published on 30 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, the application is vulnerable to Cross-Site Scripting (XSS) attacks due to incorrect input validation and sanitization of user-input data in the conversation POST data body. This issue has been patched in version 1.8.178.

Weakness: CWE-79

Which versions are affected by CVE-2025-48484?

It affects 1 product.

Products include Freescout Freescout.

How do I fix CVE-2025-48484?

No fix has been published for CVE-2025-48484 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-2025-48484 being exploited?

There is no known exploitation of CVE-2025-48484 in the wild and no public exploit code.

Sources

Also known as GHSA-w3j9-7fhq-m8x7.

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