budibase up to 3.30.3 inMemoryView.ts eval code injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in budibase up to 3.30.3. This affects the function eval of the file packages/server/src/db/inMemoryView.ts. The manipulation leads to code injection. This vulnerability is traded as CVE-2026-27702. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in budibase up to 3.30.3. This issue affects the function eval of the file packages/server/src/db/inMemoryView.ts. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-27702 since 02/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 3.30.4 eliminates this vulnerability.

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Productinfo

Name

• budibase

Version

• 3.30.0
• 3.30.1
• 3.30.2
• 3.30.3

Website

• Product: https://github.com/Budibase/budibase/

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