Medium
Flowise - Server-Side Request Forgery via Execute Flow Base URL
Type: advisorySources: OSV
Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-56275
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 06:08 UTC · Revision 1
Source evidence
Flowise - Server-Side Request Forgery via Execute Flow Base URL
core-osv · Original sourcePublished 23 Jun 2026, 12:13 UTC
Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.
osv:CVE-2026-56275
Complete source record
{
"id": "41c4b45d395a79941e9a28a6087c7806ad065533db3eac4d584ffba2b09a96be",
"url": "https://osv.dev/vulnerability/CVE-2026-56275",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Flowise - Server-Side Request Forgery via Execute Flow Base URL",
"summary": "Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.",
"evidence": "osv:CVE-2026-56275",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-56275",
"aliases": [
"CVE-2026-56275",
"GHSA-9hrv-gvrv-6gf2"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/flowiseai/flowise",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "378d3ec3bd2d4157d6aa694bbc5ffa50c4159b97"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56275.json"
}
}
],
"modified": "2026-10-28T02:30:42.930317771Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56275.json",
"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56275",
"https://www.vulncheck.com/advisories/flowise-server-side-request-forgery-via-execute-flow-base-url"
],
"provider_metadata": {
"cwe_ids": [
"CWE-918"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56275.json"
}
},
"related_cves": [
{
"value": "CVE-2026-56275",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510985,
"published_at": "2026-06-23T12:13:01.376+00:00"
}