CVE-2023-6366 WhatsUp Gold Stored Cross-Site Scripting (XSS) via Alert Center

High 7.6 Published 14 Dec 2023 Updated 21 May 2025

Attackers can inject malicious scripts into the Alert Center, allowing execution in victim browsers to potentially hijack sessions or execute code.

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-2023-6366?

CVE-2023-6366 is a high-severity cross-site scripting vulnerability in Progress Whatsup Gold, published on 14 Dec 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

In WhatsUp Gold versions released before 2023.1, a stored cross-site scripting (XSS) vulnerability has been identified. It is possible for an attacker to craft a XSS payload and store that value within Alert Center.

If a WhatsUp Gold user interacts with the crafted payload, the attacker would be able to execute malicious JavaScript within the context of the victims browser.

Weakness: CWE-79

Which versions are affected by CVE-2023-6366?

It affects 1 product.

Products include Progress Whatsup Gold.

How do I fix CVE-2023-6366?

No fix has been published for CVE-2023-6366 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-2023-6366 being exploited?

There is no known exploitation of CVE-2023-6366 in the wild and no public exploit code.

All Progress Whatsup Gold vulnerabilities

Sources

Also known as GHSA-63vr-qwf8-72qv.