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CVE-2026-45719— Budibase: CouchDB Reduce Injection via Unsanitized Calculation Parameter in V1 Views API

Quick assessment

Affected
Budibase budibase
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.

Budibase是英国Budibase开源的一个用于在几分钟内创建内部应用程序、工作流和管理面板的低代码平台。 Budibase 3.38.1之前版本存在安全漏洞，该漏洞源于V1视图API从请求体接受calculation参数直接插入CouchDB reduce函数定义而未验证，可能导致具有构建者权限的用户注入任意JavaScript代码在CouchDB JavaScript引擎中执行。

CVSS 6.5 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Budibase budibase < 3.38.1 affected
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I. Basic Information for CVE-2026-45719

Vulnerability Information
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Vulnerability Title
Budibase: CouchDB Reduce Injection via Unsanitized Calculation Parameter in V1 Views API
Source: CVE Program / CVE List V5
Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.38.1, the V1 Views API (POST /api/views) accepts a calculation parameter from the request body that is interpolated directly into a CouchDB reduce function definition without validation. Although an internal SCHEMA_MAP object defines the valid calculation types (sum, count, stats), no actual validation is performed against this map before the value is used in string interpolation. A user with Builder permissions can inject arbitrary JavaScript code that will be executed within the CouchDB JavaScript engine when the view is queried. This vulnerability is fixed in 3.38.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Budibase 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Budibase是英国Budibase开源的一个用于在几分钟内创建内部应用程序、工作流和管理面板的低代码平台。 Budibase 3.38.1之前版本存在安全漏洞，该漏洞源于V1视图API从请求体接受calculation参数直接插入CouchDB reduce函数定义而未验证，可能导致具有构建者权限的用户注入任意JavaScript代码在CouchDB JavaScript引擎中执行。
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 < 3.38.1 -

II. Public POCs for CVE-2026-45719

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III. Intelligence Information for CVE-2026-45719

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Vendor Advisories for CVE-2026-45719 (1)

Other References for CVE-2026-45719 (1)

Same Patch Batch · Budibase · 2026-05-27 · 20 CVEs total

CVE-2026-46425 9.9 CRITICAL Budibase: SCIM endpoints lack role-based authorization, BASIC users CRUD tenant users
CVE-2026-48150 9.0 CRITICAL Budibase: Workspace-scoped builder escalates to global admin via /api/public/v1/roles/assi
CVE-2026-45716 8.8 HIGH Budibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Con
CVE-2026-45717 8.8 HIGH Budibase: `PUT /api/datasources/:datasourceId` is protected only by `TABLE/READ` permissio
CVE-2026-48153 8.5 HIGH Budibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata
CVE-2026-48149 8.1 HIGH Budibase: Stored XSS in Text component: BASIC users execute JS in admin session via Markdo
CVE-2026-48152 8.1 HIGH Budibase: Basic app users can exfiltrate stored REST datasource auth by rewriting datasour
CVE-2026-46427 7.7 HIGH Budibase: Snowflake private key returned unmasked from datasource API to BASIC users
CVE-2026-45061 7.7 HIGH Budibase: SSRF via trivial `.tar.gz` substring bypass in Plugin URL upload (`/api/plugin`)
CVE-2026-48146 7.7 HIGH Budibase: SSRF via OAuth2 Config Validation — Missing fetchWithBlacklist Protection
CVE-2026-45548 7.7 HIGH Budibase: SSRF in AI Extract File Automation Step via Missing IP Blacklist Validation
CVE-2026-45715 7.7 HIGH Budibase: SSRF Bypass via HTTP Redirect in REST Datasource Integration
CVE-2026-46426 7.6 HIGH Budibase: Unrestricted Upload of File with Dangerous Type
CVE-2026-48151 7.5 HIGH Budibase: Webhook schema endpoint authorization bypass allows unauthenticated mutation of
CVE-2026-48147 6.5 MEDIUM Budibase: Unanchored Regex in `matchers.ts` Allows CSRF Bypass via Query String Injection
CVE-2026-45718 5.4 MEDIUM Budibase: Row Action Trigger Bypasses View Row Filter Security Boundary Allowing Action on
CVE-2026-46424 4.2 MEDIUM Budibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users
CVE-2026-48128 Budibase: SSRF via User-Controlled queryId in Automation Execute Query Step
CVE-2026-48148 Budibase: Unvalidated VectorDB Host Parameter Enables SSRF

IV. Related Vulnerabilities

Same product: budibase
Same vendor: Budibase
Same weakness: CWE-94

V. Comments for CVE-2026-45719

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