# CVE-2026-126153: Fortinet FortiMail path traversal in API

Source: https://junglewise.ai/threats/cve-2026-126153-a-improper-limitation-of-a-pathname-to-a-restricted-directory  
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-2026-126153 · Severity: high · CVSS 7.5 · Published 2026-11-11

FortiMail is an email security gateway that protects organizations from email-based threats. An unauthenticated attacker can bypass pathname restrictions through crafted requests to execute unauthorized commands on affected systems, potentially compromising email infrastructure and gaining code execution.

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

## Quick answers

**Is CVE-2026-126153 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126153 being exploited in the wild.

**How severe is CVE-2026-126153?** High severity, with a CVSS score of 7.5, published 11 November 2026.

**Which products and versions are affected?** Fortinet FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2 all versions.

**Is there a fix for CVE-2026-126153?** Yes: fixed in FortiMail 8.0.2 or above, 7.6.7 or above, 7.4.9 or above; 7.2 migrate to a fixed release. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-126153 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-126153?** Check whether you run Fortinet FortiMail 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 FortiMail 8.0.2 or above, 7.6.7 or above, 7.4.9 or above; 7.2 migrate to a fixed release

## Technical details

A path traversal vulnerability (CWE-22) in the FortiMail API allows unauthenticated attackers to execute arbitrary commands via improper pathname limitation. The vulnerability affects FortiMail 8.0.0–8.0.1, 7.6.0–7.6.6, 7.4.0–7.4.8, and all 7.2 versions; exploitation requires only network access with no authentication or user interaction.

## Affected products

- Fortinet FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2 all versions

## Timeline

- 2026-11-10: disclosed
- 2026-10-05: patched: FortiMail Cloud updated to v7.6.7 GA or v8.0.2 GA

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-205](https://fortiguard.fortinet.com/psirt/FG-IR-26-205)

## Related threats

- [Fortinet FortiMail SQL injection](https://junglewise.ai/threats/cve-2026-126263-a-improper-neutralization-of-special-elements-used-in-an-sql)
- [Fortinet FortiMail argument injection in administrative interface](https://junglewise.ai/threats/cve-2026-126169-a-improper-neutralization-of-argument-delimiters-in-a-command)
- [Fortinet FortiMail argument injection in administrative interface](https://junglewise.ai/threats/cve-2026-126168-a-improper-neutralization-of-argument-delimiters-in-a-command)
- [Fortinet FortiMail command injection in admin GUI](https://junglewise.ai/threats/cve-2026-126167-a-improper-neutralization-of-special-elements-used-in-a-command)
- [Fortinet FortiMail argument injection in admin interface](https://junglewise.ai/threats/cve-2026-126166-a-improper-neutralization-of-argument-delimiters-in-a-command)