# CVE-2026-84388: Fortinet FortiPAM Chrome Extension improper authentication flaw

Source: https://junglewise.ai/threats/cve-2026-84388-a-improper-restriction-of-rendered-ui-layers-or-frames  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84388 · Severity: critical · CVSS 9.6 · Published 2026-09-22

Fortinet's Chrome extension for privileged access management contains an authentication vulnerability that allows remote attackers to intercept and proxy a user's browser traffic without authentication. An attacker can exploit this by hosting a malicious website; when a user with the vulnerable extension visits it, their traffic can be routed through attacker-controlled servers, exposing credentials and sensitive data.

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

## Quick answers

**Is CVE-2026-84388 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84388 being exploited in the wild.

**How severe is CVE-2026-84388?** Critical severity, with a CVSS score of 9.6, published 22 September 2026.

**Which products and versions are affected?** Fortinet Fortipam 1.8.x, 1.9.0; Fortinet FortiPAM Chrome Extension 7.4 all versions, 8.0 all versions.

**Is there a fix for CVE-2026-84388?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-84388 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-84388?** Check whether you run Fortinet Fortipam or Fortinet FortiPAM Chrome Extension 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.

## Technical details

The vulnerability is an improper authentication flaw (CWE-287) in the Fortinet Privileged Access Agent Chrome Extension's GUI component. A remote, unauthenticated attacker can trick a user into visiting a malicious website to proxy that user's browser traffic through attacker-controlled servers, resulting in information disclosure of credentials and session data. Fixes are available: version 8.0.1.123 or above for extension 8.0, coordinated with FortiPAM server upgrades to 1.9.1 or 1.8.4.

## Affected products

- Fortinet FortiPAM Chrome Extension 7.4 all versions, 8.0 all versions
- Fortinet FortiPAM 1.8.x, 1.9.0

## Timeline

- 2026-09-08: disclosed
- 2026-09-22: advisory

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-168](https://fortiguard.fortinet.com/psirt/FG-IR-26-168)

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