CVE-2026-54350

Budibase has nonymous NoSQL operator injection via published-app query templates

Published

2026-06-23

Modified

2026-08-12

EPSS percentile

39%

Aliases

GHSA-8qv3-p479-cj62

Sources

github-advisory

Summary

## Summary `enrichContext` at `packages/server/src/sdk/workspace/queries/queries.ts:121-138` substitutes parameter values into the raw JSON body of a query, then `JSON.parse`s the result. The validator `validateQueryInputs` at `packages/server/src/api/controllers/query/index.ts:61-71` rejects only Handlebars markers (`{{`, `}}`) in user input and does not escape JSON metacharacters (`"`, `\`, `}`). A parameter value containing a closing quote and additional keys lifts attacker-controlled fields into the parsed filter object. For Mongo `find`, the parsed filter passes directly to `collection.find()` (`packages/server/src/integrations/mongodb.ts:506-510`). Duplicate-key JSON parsing overrides the builder's `{name: "..."}` with `{name: {$exists: true}}` and returns every document. The same primitive against an `updateMany` query (`mongodb.ts:577-585`) widens the filter scope to the full collection while the builder-controlled `$set` body runs against every matched document. The `authorized` middleware at `packages/server/src/middleware/authorized.ts:141-148` short-circuits when the query's role is `PUBLIC`. CSRF is not enforced on this path. `POST /api/v2/queries/:queryId` (`packages/server/src/api/routes/query.ts:63`) accepts the call with no session, only an `x-budibase-app-id` header that is public from the published-app URL. Result: an unauthenticated visitor of any published Budibase app reads every document of the backing MongoDB, CouchDB, Elasticsearch, DynamoDB-PartiQL, or REST-with-JSON-body collection and, where the builder has published a PUBLIC write query, modifies every document of that collection with one HTTP request. ## Affected `Budibase/budibase` server, `@budibase/server` package, ` HTTP/1.1 Host: x-budibase-app-id: <published

Affected packages

Remediation: Upgrade to 3.39.12 or later.

References

• https://github.com/advisories/GHSA-8qv3-p479-cj62