Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U N L N 5.3 .0020 10.0 —
AFFECTED Product Versions Fixed budibase < 3.39.3 – —
TIMELINE Jun 3 Reserved by GitHub_M Jun 26 EXPLOIT PUBLISHED — CVE-2026-50136 (budibase). Public exploit reference added. Jun 26 Published (CNA: GitHub_M)
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.
| Date | Event | Detail |
|---|---|---|
| June 3, 2026 | Reserved | Reserved by GitHub_M |
| June 26, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-50136 (budibase). Public exploit reference added. |
| June 26, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Budibase | budibase | — | < 3.39.3 | — |
Authoritative record: CVE-2026-50136 at cve.org
Vendors: budibase
Weaknesses: CWE-306
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-50136 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.