TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids

{
  "id": "401a2b7bc834051bef5a22e29643f902d6086f93e8358fb6fe94b66a8f9ff2bd",
  "url": "https://osv.dev/vulnerability/CVE-2026-48494",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids",
    "summary": "TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign preview phone number tied to another preview session. The WhatsApp test-webhook handler authorizes the parent typebot first, but then resolves the preview chat session only by `wa-preview-{phone}`. As a result, an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot. Version 3.17.0 patches the issue.",
    "evidence": "osv:CVE-2026-48494",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-48494",
      "aliases": [
        "CVE-2026-48494",
        "GHSA-fqf7-mmp5-j3jq"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/baptistearno/typebot.io",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c5a8c850269cad2ee65cd043f1045fba63cc99d0"
                },
                {
                  "fixed": "36a618610174fd168fb255d9c8ecc0d2cf61a192"
                },
                {
                  "fixed": "31c360a342e40d1423e5421c046e8f821b1154c4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "= 3.16.1"
                      },
                      {
                        "last_affected": "= 3.16.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "36a618610174fd168fb255d9c8ecc0d2cf61a192"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "31c360a342e40d1423e5421c046e8f821b1154c4"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v3.17.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "= 3.16.1",
            "react-v0.10.2",
            "js-v0.10.2",
            "v3.16.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48494.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.357314208Z",
      "provider": "osv",
      "references": [
        "https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48494.json",
        "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3jq",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48494",
        "https://github.com/baptisteArno/typebot.io/commit/36a618610174fd168fb255d9c8ecc0d2cf61a192",
        "https://github.com/baptisteArno/typebot.io/pull/2499"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48494.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48494",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521354,
  "published_at": "2026-08-11T17:09:33.029+00:00"
}