---
id: CVE-2026-31818
title: Budibase is an open-source low-code platform
summary: >-
  Budibase is an open-source low-code platform. Prior to version 3.33.4, a
  server-side request forgery (SSRF) vulnerability exists in Budibase's REST
  datasource connector. The platform's SSRF protection mechanism (IP blacklist)
  is rendered…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N'
cwe:
  - CWE-918
  - CWE-1188
vendor: budibase
product: budibase
affected:
  - budibase < 3.33.4
patched:
  - budibase 3.33.4
published: '2026-04-03'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-31818'
references:
  - url: >-
      https://github.com/Budibase/budibase/commit/5b0fe83d4ece52696b62589cba89ef50cc009732
    label: security-advisories@github.com
  - url: 'https://github.com/Budibase/budibase/pull/18236'
    label: security-advisories@github.com
  - url: 'https://github.com/Budibase/budibase/releases/tag/3.33.4'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-7r9j-r86q-7g45
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00434
epssPercentile: 0.35028
ingestedAt: '2026-07-25T22:05:04.380Z'
---

## Overview

Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered completely ineffective because the BLACKLIST_IPS environment variable is not set by default in any of the official deployment configurations. When this variable is empty, the blacklist function unconditionally returns false, allowing all requests through without restriction. This issue has been patched in version 3.33.4.

## Affected

- `budibase < 3.33.4`

## Remediation

Upgrade past the affected range:

- `budibase 3.33.4`