CVE-2026-50136 - Budibase: Unauthenticated S3 signed upload URL generation allows arbitrary writes with stored datasource credentials

CVE-2026-50136 - Budibase: Unauthenticated S3 signed upload URL generation allows arbitrary writes with stored datasource credentials

https://cvefeed.io/rssfeed/latest.atom / Sat, 06/27/2026 - 01:02
CVE ID :CVE-2026-50136
Published : June 26, 2026, 8:36 p.m. | 2 hours, 5 minutes ago
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.
Severity: 0.0 | NA
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