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

Quick assessment

Affected
budibase server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Budibase 3.45.0 版本之前的服务器中，GET /api/applications/:appId/appPackage 端点存在一个跨租户信息泄露漏洞，允许已认证用户读取其他租户的应用元数据和源代码。攻击者可以提交受害租户的应用 ID，以获取敏感的应用详情，包括导航结构、角色名称、内部屏幕 URL、JavaScript 代码片段以及用户标识符，而无需通过任何授权检查。

CVSS 6.5 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-100688

Vulnerability Information
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Vulnerability Title
Budibase server before 3.45.0 Cross-Tenant Information Disclosure
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
budibase server 0 ~ 3.45.0 -

II. Public POCs for CVE-2026-100688

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III. Intelligence Information for CVE-2026-100688

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Vendor Advisories for CVE-2026-100688 (1)

Other References for CVE-2026-100688 (1)

Same Patch Batch · budibase · 2026-09-26 · 9 CVEs total

CVE-2026-100682 8.8 HIGH Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink
CVE-2026-100686 8.1 HIGH Budibase before 3.45.0 Cross-Workspace Privilege Escalation via POST /api/global/groups/:g
CVE-2026-100684 8.1 HIGH Budibase Server 3.41.0 before 3.45.0 Authentication Bypass via OIDC
CVE-2026-100680 8.1 HIGH Budibase before 3.45.0 Arbitrary Local File Read via OpenAPI Import
CVE-2026-100683 8.0 HIGH Budibase before 3.45.0 SQL Injection via column-rename DDL
CVE-2026-100685 7.7 HIGH Budibase before 3.45.0 Information Disclosure via Chat Links
CVE-2026-100687 5.5 MEDIUM Budibase Server before 3.45.0 Credential Exposure via External Table Broadcast
CVE-2026-100681 5.4 MEDIUM Budibase before 3.45.0 SSRF and OAuth Token Exfiltration via Teams Webhook

IV. Related Vulnerabilities

Same product: server
Same vendor: budibase
Same weakness: CWE-639

V. Comments for CVE-2026-100688

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