# CVE-2026-126250: Fortinet FortiAuthenticator authorization bypass DoS

Source: https://junglewise.ai/threats/cve-2026-126250-a-incorrect-authorization-vulnerability-in-fortinet  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-126250 · Severity: high · CVSS 8.2 · Published 2026-11-11

FortiAuthenticator is an authentication and identity management platform used by organizations to control user access. An authorization flaw allows unauthenticated attackers to send HTTP requests that crash or disable the service, causing business operations that depend on authentication to stop working. This affects FortiAuthenticator 8.0.0-8.0.3 and 6.6.0-6.6.10.

Technologies: [Fortinet FortiAuthenticator](https://junglewise.ai/threats/technologies/fortiauthenticator). Vendors: [Fortinet](https://junglewise.ai/threats/vendors/fortinet).

## Quick answers

**Is CVE-2026-126250 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126250 being exploited in the wild.

**How severe is CVE-2026-126250?** High severity, with a CVSS score of 8.2, published 11 November 2026.

**Which products and versions are affected?** Fortinet FortiAuthenticator 8.0.0 through 8.0.3, 6.6.0 through 6.6.10.

**Is there a fix for CVE-2026-126250?** Yes: fixed in FortiAuthenticator 8.0.4 or above; FortiAuthenticator 6.6.11 or above. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-126250 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-126250?** Check whether you run Fortinet FortiAuthenticator at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in FortiAuthenticator 8.0.4 or above; FortiAuthenticator 6.6.11 or above

## Technical details

An incorrect authorization vulnerability (CWE-863) in the django-guest API component allows unauthenticated attackers to trigger denial of service through crafted HTTP requests. The vulnerability requires no authentication or user interaction and is exploitable over the network. Patches are available in FortiAuthenticator 8.0.4 and 6.6.11.

## Affected products

- Fortinet FortiAuthenticator 8.0.0 through 8.0.3, 6.6.0 through 6.6.10

## Timeline

- 2026-11-10: disclosed

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-264](https://fortiguard.fortinet.com/psirt/FG-IR-26-264)

## Related threats

- [Fortinet FortiAuthenticator hard-coded password authentication bypass](https://junglewise.ai/threats/cve-2026-126257-a-use-of-hard-coded-password-vulnerability-in-fortinet)
- [Fortinet FortiAuthenticator SQL injection](https://junglewise.ai/threats/cve-2026-126252-a-improper-neutralization-of-special-elements-used-in-an-sql)
- [Fortinet FortiAuthenticator incorrect authorization](https://junglewise.ai/threats/cve-2026-126251-a-incorrect-authorization-vulnerability-in-fortinet)
- [Fortinet FortiAuthenticator privilege escalation in GUI](https://junglewise.ai/threats/cve-2026-126249-a-improper-privilege-management-vulnerability-in-fortinet)
- [Fortinet FortiAuthenticator insufficiently protected credentials](https://junglewise.ai/threats/cve-2026-126248-a-insufficiently-protected-credentials-vulnerability-in-fortinet)