CVE-2026-50136 | BDVDB-2026-343539 Detail

Description#

Budibase is an open-source low-code platform. Prior to 3.39.3, the application server exposes an unauthenticated endpoint that generates S3 PutObject presigned URLs using credentials stored in a workspace datasource. The route is protected only by the recaptcha middleware and does not require authentication, table permission, datasource permission, or builder access. A public caller who knows a workspace ID and S3 datasource ID can request a signed upload URL for attacker-controlled bucket and key values. This vulnerability is fixed in 3.39.3.

Impact#

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Exploit#

History#

1. Version 12026-06-26Record published in the CVE List.
2. Version 22026-06-27Most recent update recorded in the CVE List.