Open redirect in FortiSIEM - CVE-2026-84389
Published: September 9, 2026
Vulnerability identifier: #VU148727
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84389
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
The vulnerability exists due to url redirection to untrusted site ('open redirect') on FortiSIEM. An authenticated attacker can cause a redirection to any website via specially crafted HTTP requests.
Affected software
FortiSIEM
How to mitigate CVE-2026-84389
Install update from vendor's website.
FortiSIEM - update to 7.5.2