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High

Flowise before 3.1.4 Authorization Bypass via openai-realtime

Type: advisorySources: OSV

Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-91933
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 14:01 UTC · Revision 1

Source evidence

Flowise before 3.1.4 Authorization Bypass via openai-realtime

core-osv · Original source

Published 15 Sept 2026, 15:17 UTC

Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.

osv:CVE-2026-91933
Complete source record
{
  "id": "74622131e494efaec43bd342df1f409b435efddeaf5d9dc02b2fc75fc46df9a4",
  "url": "https://osv.dev/vulnerability/CVE-2026-91933",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Flowise before 3.1.4 Authorization Bypass via openai-realtime",
    "summary": "Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.",
    "evidence": "osv:CVE-2026-91933",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-91933",
      "aliases": [
        "CVE-2026-91933",
        "GHSA-gggp-6qmf-xwwc"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/flowiseai/flowise",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a65f81bb43ef66d3ce734bf0dff4223ae8041c95"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.1.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.1.4"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "flowise@3.1.3",
            "flowise-ui@3.1.3",
            "flowise-components@3.1.3",
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            "pre-langchain-v1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91933.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.309216300Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91933.json",
        "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gggp-6qmf-xwwc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-91933",
        "https://www.vulncheck.com/advisories/flowise-before-3.1.4-authorization-bypass-via-openai-realtime"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91933.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-91933",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503397,
  "published_at": "2026-09-15T15:17:56.954+00:00"
}