CVE-2026-25200 Cross-site scripting in MagicINFO 9 Server

Critical 9.8 Published 2 Feb 2026 Updated 26 Feb 2026

Authorized users can upload HTML files without authentication, enabling stored XSS attacks that lead to account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-25200?

CVE-2026-25200 is a critical cross-site scripting vulnerability in Samsung Electronics MagicINFO 9 Server, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in MagicInfo9 Server allows authorized users to upload HTML files without authentication, leading to Stored XSS, which can result in account takeover

This issue affects MagicINFO 9 Server: less than 21.1090.1.

Weakness: CWE-434

Which versions are affected by CVE-2026-25200?

It affects 1 product.

Products include Samsung Magicinfo 9 Server.

How do I fix CVE-2026-25200?

No fix has been published for CVE-2026-25200 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-2026-25200 being exploited?

There is no known exploitation of CVE-2026-25200 in the wild and no public exploit code.

Sources

Also known as GHSA-3x3j-v5j3-f2p6.