CVE-2026-27702
CRITICAL
GHSA-rvhr-26g4-p2r8
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Lifecycle Timeline
4Description
Budibase is a low code platform for creating internal tools, workflows, and admin panels. Prior to version 3.30.4, an unsafe `eval()` vulnerability in Budibase's view filtering implementation allows any authenticated user (including free tier accounts) to execute arbitrary JavaScript code on the server. This vulnerability ONLY affects Budibase Cloud (SaaS) - self-hosted deployments use native CouchDB views and are not vulnerable. The vulnerability exists in `packages/server/src/db/inMemoryView.ts` where user-controlled view map functions are directly evaluated without sanitization. The primary impact comes from what lives inside the pod's environment: the `app-service` pod runs with secrets baked into its environment variables, including `INTERNAL_API_KEY`, `JWT_SECRET`, CouchDB admin credentials, AWS keys, and more. Using the extracted CouchDB credentials, we verified direct database access, enumerated all tenant databases, and confirmed that user records (email addresses) are readable. Version 3.30.4 contains a patch.
Analysis
Unauthorized data access in Budibase low-code platform before 3.30.4 allows unauthenticated users to manipulate internal state. PoC and patch available.
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Remediation
Within 24 hours: Identify all Budibase instances in your environment and assess which are internet-facing or contain sensitive data. Within 7 days: Apply the available vendor patch to all affected Budibase deployments in development, staging, and production environments, validating functionality after each update. …
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External POC / Exploit Code
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