---
id: CVE-2026-73307
title: Budibase is an open-source low-code platform
summary: >-
  Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in
  packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for
  string attachment values passed by processAttachments in
  packages/server/src/sdk/wor…
severity: none
cwe:
  - CWE-918
published: '2026-08-12'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:56:50.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73307'
references:
  - url: >-
      https://github.com/Budibase/budibase/commit/fc8161e739bdc5513c4314282251e327e7fe339f
    label: security-advisories@github.com
  - url: 'https://github.com/Budibase/budibase/pull/18866'
    label: security-advisories@github.com
  - url: 'https://github.com/Budibase/budibase/releases/tag/3.39.4'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-hfhx-w8p8-4hc7
    label: security-advisories@github.com
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-hfhx-w8p8-4hc7
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00398
epssPercentile: 0.3382
ingestedAt: '2026-09-08T21:11:12.276Z'
---

## Overview

Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI table-generation feature could cause an attachment value to reference an internal service or cloud metadata endpoint, and the response would be stored as an attachment without fetchWithBlacklist validation. This issue is fixed in version 3.39.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.