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 sourcePublished 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"
}