What’s Vulnerable › Vulnerabilities

CVE-2026-100688: Budibase server before 3.45.0 Cross-Tenant Information Disclosure

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-26 · updated 2026-10-08
• Weakness: CWE-639

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.

Affected products

• budibase server: before 3.45.0 — fixed in 3.45.0

How to fix

Upgrade to a fixed version: budibase server 3.45.0. Check the vendor advisory for mitigations.

References

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

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