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vulnerability / NVI-00015011 / Revision 1

Budibase: Unauthenticated REST Datasource Credential Theft via Cross-Origin Auth Leak

GitHub lists this reviewed advisory for @budibase/server. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.

source listedactiveGHSA-mqhr-6j6h-74p5

This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.

01 / Meaning

Why it matters

Published affected context helps an owner decide what evidence to gather. This report has not examined your application.

02 / Applicability

The affected context

Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.

@budibase/server

source listed
  • <= 3.38.1

## Summary Budibase attaches a REST datasource's stored credentials (Bearer/Basic tokens and static headers) to an outgoing request before it decides which host the request goes to, and never checks that the destination host matches the datasource. A query's request path can be pointed at any host (via an absolute URL or a user-supplied `{{ parameter }}`), so the stored credentials are delivered to an attacker-chosen server. Because a query can be published with the PUBLIC role, this is reachable by a fully unauthenticated attacker with one HTTP request. The credentials are masked (`--secret-value--`) everywhere in the API, yet this recovers them in cleartext. This is a bypass of GHSA-3gp5 (which fixed the base-URL rewrite vector but added no same-origin check; the query-path vector remains, now unauthenticated). ## Root Cause `packages/server/src/integrations/rest.ts`: `_req()` builds `authHeaders = getAuthHeaders(...)` from the stored auth configs and merges them with `config.defaultHeaders` into every request, before the URL is resolved. `getUrl()`: if the (parameter-enriched) query `path` starts with `http`, the datasource base URL is ignored and `path` becomes the absolute re

GitHub Advisory Database

03 / Response

What to do next

  1. investigate

    Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.

    Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database

A fixed release is not deployment evidence.

Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.

04 / Limits

What this report cannot establish

  • Customer inventory, deployment, reachability and exploitation have not been inspected.
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05 / Provenance

Sources you can inspect

Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.

  1. GHSA-mqhr-6j6h-74p5 ↗

    GitHub Advisory Database · vendor advisory

    Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.

Public revision history

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  1. Revision 1 ·

    First indexed by Null; source disclosure date is shown separately.

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The next step is private

Bring the question into your environment.

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