Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`

Date Aug 26, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product npm ยท @budibase/server
CVE CVE-2026-54356
High-risk advisory CVE-2026-54356

Summary

Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`

Why it matters

GitHub has published a reviewed security advisory for @budibase/server. Prioritize it with other application dependency updates, especially because EPSS places it in the 15% percentile.

Operator check

Check whether @budibase/server is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.2%; percentile: 15%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.