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CVE-2026-73305— Budibase: Privilege escalation via public role assignment API missing app-level authorization

Quick assessment

Affected
Budibase budibase
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Budibase是英国Budibase公司开源的一个低代码应用开发平台。 Budibase 3.39.24之前版本存在安全漏洞，该漏洞源于未检查appBuilder.appId或role.appId，可能导致应用级构建者授予自身构建者访问权限或任意角色，进而暴露应用数据、数据源配置和自动化操作。

CVSS 8.8 · High EPSS 0.52% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
Budibase budibase < 3.39.24 affected
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I. Basic Information for CVE-2026-73305

Vulnerability Information
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Vulnerability Title
Budibase: Privilege escalation via public role assignment API missing app-level authorization
Source: CVE Program / CVE List V5
Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.39.24, POST /api/public/v1/roles/assign called validateGlobalRoleUpdate without checking appBuilder.appId or role.appId in packages/server/src/api/controllers/public/globalRoleValidation.ts. An app-scoped builder could scope the request to an app they control and then grant themselves builder access or an arbitrary role in another app, exposing that app data, datasource configuration, and automations. This issue is fixed in version 3.39.24.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Budibase 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Budibase是英国Budibase公司开源的一个低代码应用开发平台。 Budibase 3.39.24之前版本存在安全漏洞，该漏洞源于未检查appBuilder.appId或role.appId，可能导致应用级构建者授予自身构建者访问权限或任意角色，进而暴露应用数据、数据源配置和自动化操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Budibase budibase < 3.39.24 -

II. Public POCs for CVE-2026-73305

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7770 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-73305

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Patches & Fixes for CVE-2026-73305 (2)

Vendor Advisories for CVE-2026-73305 (1)

Vendor Pages for CVE-2026-73305 (1)

Same Patch Batch · Budibase · 2026-08-13 · 13 CVEs total

CVE-2026-72851 10.0 CRITICAL Budibase before 3.40.0 SQL Injection via Unauthenticated Webhook
CVE-2026-72850 9.1 CRITICAL Budibase before 3.40.0 Arbitrary File Write via Path Traversal
CVE-2026-73302 9.0 CRITICAL Budibase: OIDC SSO account takeover: incoming identity linked by email without checking em
CVE-2026-72855 8.5 HIGH Budibase before 3.40.0 DNS Rebinding SSRF via OpenAPI and REST
CVE-2026-73618 8.3 HIGH Budibase Server before 3.40.0 NoSQL Injection via JSON Parameter
CVE-2026-72856 8.1 HIGH Budibase before 3.40.0 Authentication Bypass via Tenant Owner Email
CVE-2026-72857 7.7 HIGH Budibase before 3.40.0 Credential Exposure via STRING Fields
CVE-2026-72849 7.7 HIGH Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF
CVE-2026-72853 7.6 HIGH Budibase before 3.40.0 SQL Injection via Oracle connector
CVE-2026-73408 7.6 HIGH Budibase: MySQL DESCRIBE Backtick Injection via multipleStatements in Database Connector
CVE-2026-73617 7.1 HIGH Budibase before 3.40.0 NoSQL Injection via MongoDB datasource
CVE-2026-73304 4.9 MEDIUM Budibase: SSO OAuth2 Token Leakage via User Metadata Endpoints to Power-Role Users

IV. Related Vulnerabilities

Same product: budibase
Same vendor: Budibase
Same weakness: CWE-269

V. Comments for CVE-2026-73305

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