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OpenAdvisories
Medium · 5.1 CVE-2026-73409 EUVD-2026-57509GHSA-ppr4-5f46-j9c6

Budibase: Server Filesystem Existence/Read Oracle via Builder-Controlled MongoDB tlsCertificateKeyFile

Published Aug 12, 2026 · Updated Aug 14, 2026 · Assigned by GitHub_M

Description

Budibase is an open-source low-code platform. Prior to 3.40.1, packages/server/src/integrations/mongodb.ts passed builder-controlled tlsCertificateKeyFile and tlsCAFile values directly to MongoClient on Budibase Cloud. A builder could submit absolute server paths through /api/datasources/verify and distinguish readable existing files from missing files by comparing the driver error, exposing a filesystem existence and readability oracle on the shared server. This issue is fixed in version 3.40.1.

Affected products

VendorProductAffectedFixed
Budibase budibase < 3.40.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @budibase/server <= 3.38.1 — GHSA-ppr4-5f46-j9c6

References