CVE-2026-25972 Cross-site scripting in FortiSIEM

Medium 4.1 Published 10 Mar 2026 Updated 12 Mar 2026

Remote unauthenticated attackers can inject arbitrary data via URL parameters in FortiSIEM, enabling social engineering attacks.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-25972?

CVE-2026-25972 is a medium-severity cross-site scripting vulnerability in Fortinet FortiSIEM, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4 may allow a remote unauthenticated attacker to provide arbitrary data enabling a social engineering attack via spoofed URL parameters.

Weakness: CWE-79

Which versions are affected by CVE-2026-25972?

It affects 1 product.

Products include Fortinet Fortisiem.

How do I fix CVE-2026-25972?

No fix has been published for CVE-2026-25972 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-2026-25972 being exploited?

There is no known exploitation of CVE-2026-25972 in the wild and no public exploit code.

Sources

Also known as GHSA-2m7q-86j6-pc24.