# CVE-2026-126220: Fortinet FortiManager injection in GUI

Source: https://junglewise.ai/threats/cve-2026-126220-a-improper-neutralization-of-special-elements-in-output-used-by  
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-2026-126220 · Severity: high · CVSS 7.2 · Published 2026-11-11

Fortinet FortiManager is a centralized management platform for Fortinet security appliances. An authenticated administrator can exploit improper input validation in the web GUI to read or write arbitrary files, or execute unauthorized commands on the system. This could allow a compromised admin account or a malicious insider to gain full control of the FortiManager installation and all managed devices.

Technologies: [Fortinet Fortianalyzer](https://junglewise.ai/threats/technologies/fortianalyzer), [Fortinet Fortianalyzer Cloud](https://junglewise.ai/threats/technologies/fortianalyzer-cloud), [Fortinet FortiManager](https://junglewise.ai/threats/technologies/fortimanager), [Fortinet FortiManager Cloud](https://junglewise.ai/threats/technologies/fortimanager-cloud). Vendors: [Fortinet](https://junglewise.ai/threats/vendors/fortinet).

## Quick answers

**Is CVE-2026-126220 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126220 being exploited in the wild.

**How severe is CVE-2026-126220?** High severity, with a CVSS score of 7.2, published 11 November 2026.

**Which products and versions are affected?** Fortinet Fortianalyzer 8.0.0, 7.6.0-7.6.7, 7.4.0-7.4.11; Fortinet Fortianalyzer Cloud 8.0.0, 7.6.0-7.6.7, 7.4.1-7.4.11; Fortinet FortiManager 8.0.0, 7.6.0-7.6.7, 7.4.0-7.4.11; Fortinet FortiManager Cloud 8.0.0, 7.6.0-7.6.7, 7.4.1-7.4.11.

**Is there a fix for CVE-2026-126220?** Yes: fixed in FortiManager 8.0.1, 7.6.8, 7.4.12; FortiManager Cloud 8.0.1, 7.6.8, 7.4.12; FortiAnalyzer 8.0.1, 7.6.8, 7.4.12; FortiAnalyzer Cloud 8.0.1, 7.6.8, 7.4.12. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-126220 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-126220?** Check whether you run Fortinet Fortianalyzer, Fortinet Fortianalyzer Cloud, Fortinet FortiManager or one of the others listed 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 8.0.1, 7.6.8, 7.4.12; FortiManager Cloud 8.0.1, 7.6.8, 7.4.12; FortiAnalyzer 8.0.1, 7.6.8, 7.4.12; FortiAnalyzer Cloud 8.0.1, 7.6.8, 7.4.12

## Technical details

This vulnerability combines CWE-22 (path traversal) and CWE-74 (injection) in the FortiManager GUI component. An authenticated administrator can craft specially malformed requests to the web interface to bypass input validation, enabling arbitrary file read/write or code execution on the underlying system. The attack requires valid admin credentials and network access to the GUI.

## Affected products

- Fortinet FortiManager 8.0.0, 7.6.0-7.6.7, 7.4.0-7.4.11
- Fortinet FortiManager Cloud 8.0.0, 7.6.0-7.6.7, 7.4.1-7.4.11
- Fortinet FortiAnalyzer 8.0.0, 7.6.0-7.6.7, 7.4.0-7.4.11
- Fortinet FortiAnalyzer Cloud 8.0.0, 7.6.0-7.6.7, 7.4.1-7.4.11

## Timeline

- 2026-11-10: disclosed

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-236](https://fortiguard.fortinet.com/psirt/FG-IR-26-236)

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