{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.17.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7ae4c007d0987d2ca907b47e1b7418db62b8a157"
            },
            {
              "fixed": "31c360a342e40d1423e5421c046e8f821b1154c4"
            }
          ],
          "repo": "https://github.com/baptistearno/typebot.io",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m7f5-3wcm-x2c4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48763.json"
  },
  "details": "TypeBot is a chatbot builder tool. Versions prior to 3.17.0 expose a deprecated public upload endpoint at `GET /api/v1/typebots/{typebotId}/blocks/{blockId}/storage/upload-url` that accepts an attacker-controlled `filePath` and returns a presigned S3 `PUT` URL for that exact key. Because the endpoint only checks that the referenced typebot is public and that the referenced block is a file input block, an unauthenticated attacker who knows a valid public `typebotId` and `blockId` can request presigned upload URLs for arbitrary objects in the shared bucket, including `private/...` and other tenants' `public/...` paths. Version 3.17.0 fixes this issue.",
  "id": "CVE-2026-48763",
  "modified": "2026-08-14T03:51:52.282715082Z",
  "published": "2026-08-11T20:51:24.628Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48763.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48763"
    },
    {
      "type": "FIX",
      "url": "https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157"
    },
    {
      "type": "FIX",
      "url": "https://github.com/baptisteArno/typebot.io/pull/2459"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "TypeBot has Arbitrary S3 Object Write in deprecated public upload endpoint via attacker-controlled filePath"
}