---
title: "CVE-2026-27702: Budibase: Remote Code Execution via Unsafe eval() in View Filter Map Function (Budibase Cloud)"
url: https://erroneo.us/security/cve/CVE-2026-27702/
description: "CVE-2026-27702 (budibase (npm)): Budibase is a low code platform for creating internal tools, workflows, and admin panels. Prior to version 3.30.4, an…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-02-25
date_modified: 2026-02-25
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-27702"
kev: false
cvss: 9.9
epss: 0.00572
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-27702: Budibase: Remote Code Execution via Unsafe eval() in View Filter Map Function (Budibase Cloud)

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.6% , percentile 46: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 46% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes budibase (npm) < 3.30.4, fixed in 3.30.4 . Check your lockfile, including transitive dependencies.

## What it 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 INTERNALAPIKEY, JWTSECRET, 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.

## Affected packages

- npm `budibase` < 3.30.4 → fixed: 3.30.4

## Affected products (CVE record)

- Budibase budibase: < 3.30.4

## Severity

- GitHub_M CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.57% probability of exploitation activity in the next 30 days; percentile 46.

## Sources

- [GitHub Advisory GHSA-rvhr-26g4-p2r8](https://github.com/advisories/GHSA-rvhr-26g4-p2r8)
- [CVE.org record CVE-2026-27702](https://www.cve.org/CVERecord?id=CVE-2026-27702)
- [NVD entry CVE-2026-27702](https://nvd.nist.gov/vuln/detail/CVE-2026-27702)
- [github.com](https://github.com/Budibase/budibase/security/advisories/GHSA-rvhr-26g4-p2r8)
- [github.com](https://github.com/Budibase/budibase/pull/18087)
- [github.com](https://github.com/Budibase/budibase/commit/348659810cf930dda5f669e782706594c547115d)
- [github.com](https://github.com/Budibase/budibase/releases/tag/3.30.4)

---
Source page: https://erroneo.us/security/cve/CVE-2026-27702/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt