High
Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains
Type: advisorySources: OSV
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) vulnerability exists in FlowiseAI's POST/GET API Chain components that allows unauthenticated attackers to force the server to make arbitrary HTTP requests to internal and external systems. By injecting malicious prompt templates, attackers can bypass the intended API documentation constraints and redirect requests to sensitive internal services, potentially leading to internal network reconnaissance and data exfiltration. This vulnerability is fixed in 3.1.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-41271
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:55 UTC · Revision 1
Source evidence
Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains
core-osv · Original sourcePublished 23 Apr 2026, 19:17 UTC
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) vulnerability exists in FlowiseAI's POST/GET API Chain components that allows unauthenticated attackers to force the server to make arbitrary HTTP requests to internal and external systems. By injecting malicious prompt templates, attackers can bypass the intended API documentation constraints and redirect requests to sensitive internal services, potentially leading to internal network reconnaissance and data exfiltration. This vulnerability is fixed in 3.1.0.
osv:CVE-2026-41271
Complete source record
{
"id": "57171b4e344911b903948fc9d6f79cf34c0e0a86dbee21632e34bc8d250f26a0",
"url": "https://osv.dev/vulnerability/CVE-2026-41271",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains",
"summary": "Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) vulnerability exists in FlowiseAI's POST/GET API Chain components that allows unauthenticated attackers to force the server to make arbitrary HTTP requests to internal and external systems. By injecting malicious prompt templates, attackers can bypass the intended API documentation constraints and redirect requests to sensitive internal services, potentially leading to internal network reconnaissance and data exfiltration. This vulnerability is fixed in 3.1.0.",
"evidence": "osv:CVE-2026-41271",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-41271",
"aliases": [
"CVE-2026-41271",
"GHSA-6r77-hqx7-7vw8"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L"
}
],
"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": "StringRangeExpression"
},
{
"cpe": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"pre-langchain-v1",
"flowise@3.0.13",
"flowise-ui@3.0.13",
"flowise-components@3.0.13",
"flowise@3.0.12",
"flowise-ui@3.0.12",
"flowise-components@3.0.12",
"flowise@3.0.11",
"flowise-ui@3.0.11",
"flowise-components@3.0.11",
"flowise@3.0.10",
"flowise-ui@3.0.10",
"flowise-components@3.0.10",
"flowise@3.0.9",
"flowise-ui@3.0.9",
"flowise-components@3.0.9",
"flowise@3.0.8",
"flowise-ui@3.0.8",
"flowise-components@3.0.8",
"flowise@3.0.7",
"flowise-ui@3.0.7",
"flowise-components@3.0.7",
"flowise@3.0.6",
"flowise-ui@3.0.6",
"flowise-components@3.0.6",
"flowise@3.0.5",
"flowise-ui@3.0.5",
"flowise-components@3.0.5",
"flowise@3.0.4",
"flowise-ui@3.0.4",
"flowise-components@3.0.4",
"flowise@3.0.3",
"flowise-ui@3.0.3",
"flowise-components@3.0.3",
"flowise@3.0.2",
"flowise-ui@3.0.2",
"flowise-components@3.0.2",
"flowise@3.0.1",
"flowise-ui@3.0.1",
"flowise-components@3.0.1",
"flowise@3.0.0",
"flowise-ui@3.0.0",
"flowise-components@3.0.0",
"flowise@2.2.8",
"flowise-ui@2.2.8",
"flowise-components@2.2.8",
"flowise@2.2.7-patch.1",
"flowise-ui@2.2.7-patch.1",
"flowise-components@2.2.7-patch.1",
"flowise@2.2.7",
"flowise-ui@2.2.7",
"flowise-components@2.2.7",
"flowise@2.2.6-hotfix.1",
"flowise@2.2.6",
"flowise-ui@2.2.6",
"flowise-components@2.2.6",
"flowise@2.2.5",
"flowise-ui@2.2.5",
"flowise-components@2.2.5",
"flowise@2.2.4",
"flowise-ui@2.2.4",
"flowise-components@2.2.4",
"flowise@2.2.3",
"flowise-ui@2.2.3",
"flowise-components@2.2.3",
"flowise@2.2.2",
"flowise-ui@2.2.2",
"flowise-components@2.2.2",
"flowise@2.2.1",
"flowise-ui@2.2.1",
"flowise-components@2.2.1",
"flowise@2.2.0",
"flowise-ui@2.2.0",
"flowise-components@2.2.0",
"flowise@2.1.5",
"flowise-ui@2.1.5",
"flowise-components@2.1.5",
"flowise@2.1.4",
"flowise-ui@2.1.4",
"flowise-components@2.1.4",
"flowise@2.1.3",
"flowise-ui@2.1.3",
"flowise-components@2.1.3",
"flowise@2.1.2",
"flowise-ui@2.1.2",
"flowise-components@2.1.2",
"flowise@2.1.1",
"flowise-ui@2.1.1",
"flowise-components@2.1.1",
"flowise@2.1.0",
"flowise-ui@2.1.0",
"flowise-components@2.1.0",
"flowise@2.0.7",
"flowise-ui@2.0.7",
"flowise-components@2.0.7",
"flowise@2.0.6",
"flowise-ui@2.0.6",
"flowise-components@2.0.6",
"flowise@2.0.5",
"flowise-ui@2.0.5",
"flowise-components@2.0.5",
"flowise@2.0.4",
"flowise-ui@2.0.4",
"flowise-components@2.0.4",
"flowise@2.0.3",
"flowise-ui@2.0.3",
"flowise-components@2.0.3",
"flowise@2.0.2",
"flowise-ui@2.0.2",
"flowise-components@2.0.2",
"flowise@1.8.4",
"flowise-ui@1.8.4",
"flowise-components@1.8.6",
"flowise@1.8.3",
"flowise-ui@1.8.3",
"flowise-components@1.8.4",
"flowise@1.8.2",
"flowise-ui@1.8.2",
"flowise-components@1.8.3",
"flowise@1.8.1",
"flowise-ui@1.8.1",
"flowise-components@1.8.1",
"flowise@1.8.0",
"flowise-ui@1.8.0",
"flowise-components@1.8.0",
"flowise@1.7.2",
"flowise-ui@1.7.2",
"flowise-components@1.7.2",
"flowise@1.7.1",
"flowise-ui@1.7.1",
"flowise-components@1.7.1",
"flowise@1.7.0",
"flowise-ui@1.7.0",
"flowise-components@1.7.0",
"flowise@1.6.6",
"flowise-ui@1.6.6",
"flowise-components@1.6.8",
"flowise@1.6.5",
"flowise-ui@1.6.5",
"flowise-components@1.6.7",
"flowise@1.6.4",
"flowise-ui@1.6.4",
"flowise-components@1.6.6",
"flowise@1.6.3",
"flowise-ui@1.6.3",
"flowise-components@1.6.5",
"flowise@1.6.2",
"flowise-ui@1.6.2",
"flowise-components@1.6.4",
"flowise@1.6.1",
"flowise-ui@1.6.1",
"flowise-components@1.6.3",
"flowise@1.6.0",
"flowise-ui@1.6.0",
"flowise-components@1.6.2",
"flowise@1.5.1",
"flowise-ui@1.5.1",
"flowise-components@1.6.1",
"flowise@1.5.0",
"flowise-ui@1.5.0",
"flowise-components@1.6.0",
"flowise@1.4.12",
"flowise-ui@1.4.9",
"flowise-components@1.5.3",
"flowise@1.4.11",
"flowise-ui@1.4.8",
"flowise-components@1.5.2",
"flowise@1.4.10",
"flowise-ui@1.4.7",
"flowise-components@1.5.1",
"flowise@1.4.9",
"flowise@1.4.8",
"flowise-ui@1.4.6",
"flowise-components@1.5.0",
"flowise@1.4.7",
"flowise-ui@1.4.5",
"flowise-components@1.4.9",
"flowise-components@1.4.8",
"flowise@1.4.6",
"flowise-ui@1.4.4",
"flowise-components@1.4.7",
"flowise@1.4.5",
"flowise-ui@1.4.3",
"flowise@1.4.4",
"flowise-ui@1.4.2",
"flowise-components@1.4.6",
"flowise@1.4.2",
"flowise-components@1.4.2",
"flowise@1.4.1",
"flowise-components@1.4.1",
"flowise@1.4.0",
"flowise-ui@1.4.0",
"flowise-components@1.4.0",
"flowise@1.3.9",
"flowise-ui@1.3.7",
"flowise-components@1.3.11",
"flowise-components@1.3.10",
"flowise@1.3.8",
"flowise-ui@1.3.6",
"flowise-components@1.3.9",
"flowise@1.3.7",
"flowise-ui@1.3.5",
"flowise-components@1.3.8",
"flowise@1.3.6",
"flowise-ui@1.3.4",
"flowise-components@1.3.7",
"flowise@1.3.5",
"flowise-ui@1.3.3",
"flowise-components@1.3.5",
"flowise@1.3.4",
"flowise-ui@1.3.2",
"flowise-components@1.3.4",
"flowise@1.3.3",
"flowise-ui@1.3.1",
"flowise-components@1.3.3",
"flowise@1.3.2",
"flowise-components@1.3.2",
"flowise@1.3.1",
"flowise-components@1.3.1",
"flowise@1.3.0",
"flowise-ui@1.3.0",
"flowise-components@1.3.0",
"flowise@1.2.16",
"flowise-ui@1.2.15",
"flowise-components@1.2.17",
"flowise@1.2.15",
"flowise-ui@1.2.14",
"flowise-components@1.2.16",
"flowise@1.2.14",
"flowise-ui@1.2.13",
"flowise-components@1.2.15",
"flowise@1.2.13",
"flowise-ui@1.2.12",
"flowise-components@1.2.14",
"flowise@1.2.11",
"flowise-ui@1.2.10",
"flowise-components@1.2.12",
"flowise@1.2.9",
"flowise-components@1.2.10",
"flowise@1.2.8",
"flowise-ui@1.2.7",
"flowise-components@1.2.9",
"flowise@1.2.7",
"flowise-ui@1.2.6",
"flowise-components@1.2.8",
"flowise@1.2.6",
"flowise-ui@1.2.5",
"flowise-components@1.2.7",
"flowise@1.2.5",
"flowise-ui@1.2.4",
"flowise-components@1.2.6",
"flowise@1.2.4",
"flowise-ui@1.2.3",
"flowise-components@1.2.5",
"flowise@1.2.3",
"flowise-ui@1.2.2",
"flowise-components@1.2.4",
"flowise-components@1.2.3",
"flowise@1.2.2",
"flowise-ui@1.2.1",
"flowise-components@1.2.2",
"flowise@1.2.1",
"flowise-ui@1.2.0",
"flowise-components@1.2.1",
"flowise@1.1.1",
"flowise-components@1.1.1",
"flowise@1.1.0",
"flowise-ui@1.1.0",
"flowise-components@1.1.0",
"flowise@1.0.1",
"flowise@1.0.0",
"flowise-ui@1.0.0",
"flowise-components@1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41271.json"
}
}
],
"modified": "2026-10-28T02:30:36.068765108Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41271.json",
"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6r77-hqx7-7vw8",
"https://nvd.nist.gov/vuln/detail/CVE-2026-41271"
],
"provider_metadata": {
"cwe_ids": [
"CWE-918"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41271.json"
}
},
"related_cves": [
{
"value": "CVE-2026-41271",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 503360,
"published_at": "2026-04-23T19:17:40.345+00:00"
}