CVE-2026-126220 Code injection in FortiManager
Authenticated FortiManager administrators can inject content via crafted GUI requests to read or write files or execute code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-126220?
CVE-2026-126220 is a high-severity code injection vulnerability in Fortinet FortiManager, published on 11 Nov 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A improper neutralization of special elements in output used by a downstream component ('injection') vulnerability in Fortinet FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11 may allow an authenticated administrator to read or write arbitrary files or execute unauthorized code or commands via specially crafted requests to the GUI.
Weakness: CWE-74
Which versions are affected by CVE-2026-126220?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-126220?
No fix has been published for CVE-2026-126220 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-126220 being exploited?
There is no known exploitation of CVE-2026-126220 in the wild and no public exploit code.
Sources
Also known as GHSA-qgvh-f5jm-9835.