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Security advisory

Type: advisorySources: OSVCVE: CVE-2026-9196

IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user approval, which may allow an attacker to trigger side effects such as outbound network access, file system interaction, or data exfiltration with the privileges of the Langflow backend process.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-9196
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 10:34 UTC · Revision 1

Source evidence

CVE-2026-9196

core-osv · Original source

Published 5 Aug 2026, 19:17 UTC

IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user approval, which may allow an attacker to trigger side effects such as outbound network access, file system interaction, or data exfiltration with the privileges of the Langflow backend process.

osv:CVE-2026-9196
Complete source record
{
  "id": "cb18fcd0ca400aa40070dbab0c9f5734858f545675c0c10b4b1ad5099378e3cb",
  "url": "https://osv.dev/vulnerability/CVE-2026-9196",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-9196",
    "summary": "IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user approval, which may allow an attacker to trigger side effects such as outbound network access, file system interaction, or data exfiltration with the privileges of the Langflow backend process.",
    "evidence": "osv:CVE-2026-9196",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-9196",
      "aliases": [
        "CVE-2026-9196"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/langflow-ai/langflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "24d9e86885b877ea3e9d03cbc50b963765489721"
                },
                {
                  "fixed": "f307634e708a3247d23276943c4b848b15e19e84"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "fixed": "1.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-9196.json"
          }
        }
      ],
      "modified": "2026-10-26T02:30:58.183096791Z",
      "provider": "osv",
      "references": [
        "https://www.ibm.com/support/pages/node/7282646"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-9196",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 446680,
  "published_at": "2026-08-05T19:17:48.523+00:00"
}