---
id: CVE-2026-100688
title: >-
  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 c…
summary: >-
  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 c…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: budibase
product: server
affected:
  - server < 3.45.0
published: '2026-09-26'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:16:59.417'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100688'
references:
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-4946-qf2m-wrh5
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/budibase-server-before-3.45.0-cross-tenant-information-disclosure
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-4946-qf2m-wrh5
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-28T16:37:05.955451Z'
epss: 0.00331
epssPercentile: 0.26142
ingestedAt: '2026-09-26T13:33:20.904Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.