CVE-2026-48763
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.
- Affected products
- Typebot
- Fix
- Available
- CVSS 3.1
- 8.2 HIGH
- EPSS
- 0.3% (24th percentile)
- Weakness
- CWE-862
- NVD status
- Received
- Published
- 2026-08-11
No indexed exploits for CVE-2026-48763 yet
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