Vulnerability in budibase server

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Budibase server before 3.45.0 contains a cross-tenant information disclosure vulnerability in the GET /api/applications/:appId/appPackage endpoint that allows authenticated users to read another tenant's application metadata and source code. Attackers can supply a victim tenant's app id to retrieve sensitive application details including navigation structure, role names, internal screen URLs, JavaScript snippets, and user identifiers without authorization checks.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund27 Sep 2026WID-SEC-2026-3590

  Budibase: Multiple vulnerabilities Translated from German

  CVE-2026-100688

[ References ]References

• github.com/Budibase/budibase/security/advisories/GHSA-4946-qf2m-wrh5
• www.vulncheck.com/advisories/budibase-server-before-3.45.0-cross-tenant-information-dis…