CVE-2026-126238 Missing authorization in FortiAuthenticator
Unauthenticated attackers can bypass authorization checks in FortiAuthenticator to access restricted functionality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- 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-2026-126238?
CVE-2026-126238 is a high-severity missing authorization vulnerability in Fortinet FortiAuthenticator, published on 11 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to bypass authorization checks and gain unauthorized access to restricted functionality.
Weakness: CWE-863
Which versions are affected by CVE-2026-126238?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-126238?
No fix has been published for CVE-2026-126238 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-126238 being exploited?
There is no known exploitation of CVE-2026-126238 in the wild and no public exploit code.
Sources
Also known as GHSA-59jg-mcmq-hphh.