{"id":"CVE-2026-48763","title":"TypeBot is a chatbot builder tool","summary":"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…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","cwe":["CWE-862"],"published":"2026-08-11","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:46:28.353","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48763","references":[{"url":"https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157","label":"security-advisories@github.com"},{"url":"https://github.com/baptisteArno/typebot.io/pull/2459","label":"security-advisories@github.com"},{"url":"https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0","label":"security-advisories@github.com"},{"url":"https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4","label":"security-advisories@github.com"},{"url":"https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00387,"epssPercentile":0.32659,"ingestedAt":"2026-09-09T21:22:45.530Z","slug":"CVE-2026-48763","body":"## Overview\n\nTypeBot 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}