Medium
Flowise before 3.1.4 Broken Access Control via organizationuser
Type: advisorySources: OSV
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-90533
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 03:32 UTC · Revision 1
Source evidence
Flowise before 3.1.4 Broken Access Control via organizationuser
core-osv · Original sourcePublished 12 Sept 2026, 12:08 UTC
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
osv:CVE-2026-90533
Complete source record
{
"id": "11b050b8b748296c44aa4f4bd7df8d5d87b923c9ed20bebf79eb8e59566d3231",
"url": "https://osv.dev/vulnerability/CVE-2026-90533",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Flowise before 3.1.4 Broken Access Control via organizationuser",
"summary": "Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.",
"evidence": "osv:CVE-2026-90533",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-90533",
"aliases": [
"CVE-2026-90533",
"GHSA-fhxm-xxcx-g6x3"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/flowiseai/flowise",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "a65f81bb43ef66d3ce734bf0dff4223ae8041c95"
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"database_specific": {
"extracted_events": [
{
"range": [
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{
"fixed": "3.1.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
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"range": [
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90533.json"
}
}
],
"modified": "2026-10-28T02:30:33.026773900Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90533.json",
"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3",
"https://nvd.nist.gov/vuln/detail/CVE-2026-90533",
"https://www.vulncheck.com/advisories/flowise-before-3.1.4-broken-access-control-via-organizationuser"
],
"provider_metadata": {
"cwe_ids": [
"CWE-862"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90533.json"
}
},
"related_cves": [
{
"value": "CVE-2026-90533",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500041,
"published_at": "2026-09-12T12:08:42.638+00:00"
}