PT-2026-35071 · Budibase · Budibase

Published 2026-04-24 · Updated 2026-04-24 · CVE-2026-41428

Mitre

CVSS v3.1

9.1

Critical

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Budibase is an open-source low-code platform. Prior to 3.35.4, the authenticated middleware uses unanchored regular expressions to match public (no-auth) endpoint patterns against ctx.request.url. Since ctx.request.url in Koa includes the query string, an attacker can access any protected endpoint by appending a public endpoint path as a query parameter. For example, POST /api/global/users/search?x=/api/system/status bypasses all authentication because the regex /api/system/status/ matches in the query string portion of the URL. This vulnerability is fixed in 3.35.4.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-41428

Affected Products

Budibase

References · 3

• 🔥 https://github.com/Budibase/budibase/security/advisories/GHSA-8783-3wgf-jggf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-41428 · Security Note
• https://twitter.com/CVEnew/status/2047798565993681340 · Twitter Post