Security advisory
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-10134
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:12 UTC · Revision 1
Source evidence
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.
osv:CVE-2026-10134
Complete source record
{
"id": "a6b6fbe4f33d1f27b8e4fdb57b8adf2bb21a206b36f253a422104a915b57a86d",
"url": "https://osv.dev/vulnerability/CVE-2026-10134",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-10134",
"summary": "IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.",
"evidence": "osv:CVE-2026-10134",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-10134",
"aliases": [
"CVE-2026-10134"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/langflow-ai/langflow",
"type": "GIT",
"events": [
{
"introduced": "24d9e86885b877ea3e9d03cbc50b963765489721"
},
{
"last_affected": "b695f97cd393f0be3c498d472cbe6f53af372da4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.0"
},
{
"last_affected": "1.9.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10134.json"
}
}
],
"modified": "2026-10-27T02:30:44.320246661Z",
"provider": "osv",
"references": [
"https://www.ibm.com/support/pages/node/7277559"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2026-10134",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460049,
"published_at": "2026-06-30T20:17:26.883+00:00"
}