{"id":"CVE-2026-48763","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-48763","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…","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.","published":"2026-08-11T21:17:36.810","modified":"2026-08-11T21:17:36.810","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157","label":"baptisteArno/typebot.io@7ae4c00"},"references":[{"type":"WEB","url":"https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157"},{"type":"WEB","url":"https://github.com/baptisteArno/typebot.io/pull/2459"},{"type":"WEB","url":"https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0"},{"type":"WEB","url":"https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T21:17:36.810"}}