Skip to content
Heist/ feed
Back to feed
LowFix available

PSIRT Open Redirect on FortiSIEM

Type: advisorySources: Fortinet PSIRT

An open redirect vulnerability in FortiSIEM may let an authenticated attacker redirect users to an arbitrary website using specially crafted HTTP requests.

Products
FortiSIEM
Affected versions
7.4.1 through 7.4.2, 7.5.0 through 7.5.1
Fixed versions
a fixed release, upcoming 7.5.2 or above
CVEs
CVE-2026-84389
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 19:23 UTC · Revision 1

Source evidence

PSIRT Open Redirect on FortiSIEM

official-fortinet-psirt · Original source

Published 8 Sept 2026, 07:00 UTC

An open redirect vulnerability in FortiSIEM may let an authenticated attacker redirect users to an arbitrary website using specially crafted HTTP requests.

An URL redirection to untrusted site ('open redirect') [CWE-601] vulnerability in FortiSIEM may allow an authenticated attacker to cause a redirection to any website via specially crafted HTTP requests

FortiSIEM

Fixed versions: upcoming 7.5.2 or above

Prerequisites: authenticated attacker

FortiSIEM

Fixed versions: a fixed release

Prerequisites: authenticated attacker

Complete source record
{
  "id": "a8bcd21d7b7c6f0a5a3adabe9e787706677f4558e419a8394a064bd475d7ecff",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-169",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "PSIRT Open Redirect on FortiSIEM",
    "summary": "An open redirect vulnerability in FortiSIEM may let an authenticated attacker redirect users to an arbitrary website using specially crafted HTTP requests.",
    "evidence": "An URL redirection to untrusted site ('open redirect') [CWE-601] vulnerability in FortiSIEM may allow an authenticated attacker to cause a redirection to any website via specially crafted HTTP requests",
    "products": [
      {
        "name": {
          "value": "FortiSIEM",
          "evidence": "FortiSIEM 7.5"
        },
        "prerequisites": [
          {
            "value": "authenticated attacker",
            "evidence": "may allow an authenticated attacker"
          }
        ],
        "fixed_versions": [
          {
            "value": "upcoming 7.5.2 or above",
            "evidence": "Upgrade to upcoming 7.5.2 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.5.0 through 7.5.1",
            "evidence": "FortiSIEM 7.5 7.5.0 through 7.5.1"
          }
        ]
      },
      {
        "name": {
          "value": "FortiSIEM",
          "evidence": "FortiSIEM 7.4"
        },
        "prerequisites": [
          {
            "value": "authenticated attacker",
            "evidence": "may allow an authenticated attacker"
          }
        ],
        "fixed_versions": [
          {
            "value": "a fixed release",
            "evidence": "Migrate to a fixed release"
          }
        ],
        "affected_versions": [
          {
            "value": "7.4.1 through 7.4.2",
            "evidence": "FortiSIEM 7.4 7.4.1 through 7.4.2"
          }
        ]
      }
    ],
    "severity": "low",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-84389",
        "evidence": "CVE ID CVE-2026-84389"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity Low"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23564,
  "published_at": "2026-09-08T07:00:00+00:00"
}