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CVE-2026-48153— Budibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata

CVSS 8.5 · High

Affected Version Matrix 1

VendorProductVersion RangeStatus
Budibasebudibase< 3.39.0affected
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I. Basic Information for CVE-2026-48153

Vulnerability Information
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Vulnerability Title
Budibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata
Source: NVD (National Vulnerability Database)
Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.39.0, fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. This vulnerability is fixed in 3.39.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Budibasebudibase < 3.39.0 -

II. Public POCs for CVE-2026-48153

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III. Intelligence Information for CVE-2026-48153

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Vendor Advisories for CVE-2026-48153 (1)

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

CVE-2026-464259.9 CRITICALBudibase: SCIM endpoints lack role-based authorization, BASIC users CRUD tenant users
CVE-2026-481509.0 CRITICALBudibase: Workspace-scoped builder escalates to global admin via /api/public/v1/roles/assi
CVE-2026-457168.8 HIGHBudibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Con
CVE-2026-457178.8 HIGHBudibase: `PUT /api/datasources/:datasourceId` is protected only by `TABLE/READ` permissio
CVE-2026-481528.1 HIGHBudibase: Basic app users can exfiltrate stored REST datasource auth by rewriting datasour
CVE-2026-481498.1 HIGHBudibase: Stored XSS in Text component: BASIC users execute JS in admin session via Markdo
CVE-2026-457157.7 HIGHBudibase: SSRF Bypass via HTTP Redirect in REST Datasource Integration
CVE-2026-464277.7 HIGHBudibase: Snowflake private key returned unmasked from datasource API to BASIC users
CVE-2026-481467.7 HIGHBudibase: SSRF via OAuth2 Config Validation — Missing fetchWithBlacklist Protection
CVE-2026-455487.7 HIGHBudibase: SSRF in AI Extract File Automation Step via Missing IP Blacklist Validation
CVE-2026-450617.7 HIGHBudibase: SSRF via trivial `.tar.gz` substring bypass in Plugin URL upload (`/api/plugin`)
CVE-2026-464267.6 HIGHBudibase: Unrestricted Upload of File with Dangerous Type
CVE-2026-481517.5 HIGHBudibase: Webhook schema endpoint authorization bypass allows unauthenticated mutation of
CVE-2026-481476.5 MEDIUMBudibase: Unanchored Regex in `matchers.ts` Allows CSRF Bypass via Query String Injection
CVE-2026-457196.5 MEDIUMBudibase: CouchDB Reduce Injection via Unsanitized Calculation Parameter in V1 Views API
CVE-2026-457185.4 MEDIUMBudibase: Row Action Trigger Bypasses View Row Filter Security Boundary Allowing Action on
CVE-2026-464244.2 MEDIUMBudibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users
CVE-2026-48128Budibase: SSRF via User-Controlled queryId in Automation Execute Query Step
CVE-2026-48148Budibase: Unvalidated VectorDB Host Parameter Enables SSRF

IV. Related Vulnerabilities

Same product: budibase
Same vendor: Budibase
Same weakness: CWE-918

V. Comments for CVE-2026-48153

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