CVE-2025-57880 Potential XSS in Extension:BlueSpiceWhoIsOnline

Medium 5.9 Published 19 Sep 2025 Updated 19 Sep 2025

Cross-site scripting vulnerability in BlueSpice WhoIsOnline extension allows attackers to inject malicious scripts, potentially compromising user sessions and data.

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-2025-57880?

CVE-2025-57880 is a medium-severity cross-site scripting vulnerability in Hallo Welt! GmbH BlueSpice, published on 19 Sep 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

Improper Encoding or Escaping of Output vulnerability in Hallo Welt! GmbH BlueSpice (Extension:BlueSpiceWhoIsOnline) allows Cross-Site Scripting (XSS). This issue affects BlueSpice: from 5 through 5.1.1.

Weakness: CWE-79, CWE-116

Which versions are affected by CVE-2025-57880?

It affects 1 product.

Products include Hallowelt Bluespice.

How do I fix CVE-2025-57880?

No fix has been published for CVE-2025-57880 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-2025-57880 being exploited?

There is no known exploitation of CVE-2025-57880 in the wild and no public exploit code.

Sources

Also known as GHSA-47gw-9v4f-8f2g.