Missing Authentication for Critical Function Affecting @budibase/backend-core package, versions <3.35.10
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published21 Apr 2026
- disclosed16 Apr 2026
- creditAyushParkara
Introduced: 16 Apr 2026
NewCVE-2026-41428 (opens in a new tab)How to fix?
Upgrade @budibase/backend-core to version 3.35.10 or higher.
Overview
@budibase/backend-core is a Budibase backend core libraries used in server and worker
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the authenticated middleware, which uses unanchored regular expressions to match public endpoint patterns against the full request URL, including the query string. An attacker can gain unauthorized access to protected endpoints by appending a public endpoint path as a query parameter, thereby bypassing authentication checks and accessing sensitive user and system information.