Fortinet: Broken Access control on Websocket streams

Description

An Improper Access control vulnerability [CWE-284] in FortiSOAR may allow an authenticated attacker with zero permissions to subscribe to websocket streams and topics and to inject broadcast messages to the stream via crafted websocket requests Revised on 2026-09-08 00:00:00

What to do

Install the fixed versions listed in the official advisory. If you cannot update right away, apply the workarounds or mitigations it describes and limit access to the affected service.

Details

Vendor

Fortinet

Product

FortiSOAR

Affected versions

FortiSOAR PaaS 7.6: from 7.6.0 to 7.6.6 — fixed in 7.6.7
FortiSOAR PaaS 7.5: from 7.5.0 to 7.5.3 — fixed in 7.5.4
FortiSOAR PaaS 7.4: all versions 7.4
FortiSOAR PaaS 7.3: all versions 7.3
FortiSOAR on-premise 7.6: from 7.6.0 to 7.6.6 — fixed in 7.6.7
FortiSOAR on-premise 7.5: from 7.5.0 to 7.5.3 — fixed in 7.5.4
FortiSOAR on-premise 7.4: all versions 7.4
FortiSOAR on-premise 7.3: all versions 7.3 (from the advisory and NVD; check the exact builds in the official advisory)

CVSS score

5.4

Actively exploited

Not known at this time

Source

Fortinet PSIRT – original advisory

Published

September 8, 2026

The description and the recommended action are quoted from the public advisory (the action is our generic advice); severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.