budibase up to 3.35.3 Query Parameter status improper authentication

Summaryinfo

A vulnerability, which was classified as critical, has been found in budibase up to 3.35.3. This vulnerability affects unknown code of the file /api/global/users/search?x=/api/system/status of the component Query Parameter Handler. The manipulation leads to improper authentication. This vulnerability is traded as CVE-2026-41428. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in budibase up to 3.35.3. It has been rated as critical. This issue affects an unknown functionality of the file /api/global/users/search?x=/api/system/status of the component Query Parameter Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-41428 since 04/20/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading to version 3.35.4 eliminates this vulnerability.

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Productinfo

Name

• budibase

Version

• 3.35.0
• 3.35.1
• 3.35.2
• 3.35.3

Website

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

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