CVE-2025-41350 Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este

Medium 5.1 Published 18 Nov 2025 Updated 18 Feb 2026

Stored XSS in WinPlus allows attackers to steal session cookies from authenticated users via the 'descripcion' parameter.

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-2025-41350?

CVE-2025-41350 is a medium-severity cross-site scripting vulnerability in Informatica del Este WinPlus, published on 18 Nov 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

Stored Cross-site Scripting (XSS)vylnerability type in WinPlus v24.11.27 byInformática del Este that consist of an stored XSS of a stored XSS due to a lack of proper validation of user input by sending a POST request using the 'descripcion' parameter in '/WinplusPortal/ws/sWinplus.svc/json/savesoldoc_post'. This vulnerability could allow a remote user to send a specially crafted query to an authenticated user and steal their cookie session details.

Weakness: CWE-79

Which versions are affected by CVE-2025-41350?

It affects 1 product.

Products include Iest Winplus.

How do I fix CVE-2025-41350?

No fix has been published for CVE-2025-41350 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-2025-41350 being exploited?

There is no known exploitation of CVE-2025-41350 in the wild and no public exploit code.

Sources

Also known as GHSA-4vxh-gmj7-xv86.