CVE-2026-45719: Budibase: CouchDB Reduce Injection via Unsanitized Calculation Parameter in V1 Views API

May 18, 2026 (updated June 8, 2026)

The V1 Views API (POST /api/views) accepts a calculation parameter from the request body that is interpolated directly into a CouchDB reduce function definition without validation. Although an internal SCHEMA_MAP object defines the valid calculation types (sum, count, stats), no actual validation is performed against this map before the value is used in string interpolation.

A user with Builder permissions can inject arbitrary JavaScript code that will be executed within the CouchDB JavaScript engine when the view is queried.

References

Code Behaviors & Features

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