CVE-2026-41904 Cross-site scripting in freescout
An attacker with auto-reply permissions can inject malicious scripts into customer emails, leading to code execution in the victim's email client.
- 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-2026-41904?
CVE-2026-41904 is a high-severity cross-site scripting vulnerability in freescout-help-desk freescout, published on 7 May 2026. 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 help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, a user with updateAutoReply permission can store an XSS payload in the mailbox auto-reply message. The payload is rendered unescaped in the auto-reply email sent to every customer who contacts the mailbox. Email clients do not enforce CSP, so the payload executes in the customer's webmail / mail-client context. This issue has been patched in version 1.8.217.
Weakness: CWE-79
Which versions are affected by CVE-2026-41904?
How do I fix CVE-2026-41904?
No fix has been published for CVE-2026-41904 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-2026-41904 being exploited?
There is no known exploitation of CVE-2026-41904 in the wild and no public exploit code.
Sources
Also known as GHSA-q3fh-rj9h-jfrc.