# CVE-2026-126218: Fortinet FortiManager authorization bypass in GUI

Source: https://junglewise.ai/threats/cve-2026-126218-a-authorization-bypass-through-user-controlled-key-vulnerability  
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-2026-126218 · Severity: high · CVSS 8.2 · Published 2026-11-11

FortiManager is a centralized management platform for Fortinet security appliances. An authenticated admin can bypass authorization controls through crafted HTTP requests to elevate privileges to root, gaining complete control over the management system and all protected devices.

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

## Quick answers

**Is CVE-2026-126218 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126218 being exploited in the wild.

**How severe is CVE-2026-126218?** High severity, with a CVSS score of 8.2, published 11 November 2026.

**Which products and versions are affected?** Fortinet FortiManager 8.0.0 through 8.0.1, 7.6.0 through 7.6.7, 7.4.0 through 7.4.11.

**Is there a fix for CVE-2026-126218?** Yes: fixed in FortiManager 8.0.2 or above, 7.6.8 or above, 7.4.12 or above. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-126218 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-126218?** Check whether you run Fortinet FortiManager 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 FortiManager 8.0.2 or above, 7.6.8 or above, 7.4.12 or above

## Technical details

An authorization bypass through user-controlled key vulnerability (CWE-639) in the FortiManager GUI allows an authenticated administrator to escalate privileges to root via specially crafted HTTP requests. The flaw requires existing admin credentials and network access to the FortiManager interface. A successful exploit grants an attacker unrestricted administrative control over the entire management platform.

## Affected products

- Fortinet FortiManager 8.0.0 through 8.0.1, 7.6.0 through 7.6.7, 7.4.0 through 7.4.11

## Timeline

- 2026-11-10: disclosed

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-235](https://fortiguard.fortinet.com/psirt/FG-IR-26-235)

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