# CVE-2026-46424: Budibase improper privilege management via missing cache invalidation

Source: https://junglewise.ai/threats/cve-2026-46424-budibase-improper-privilege-management-via-missing-cache  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-27. Updated: 2026-05-27  
License: CC BY 4.0 with a link back

CVE-2026-46424 · Severity: medium · CVSS 4.2 · Published 2026-05-27

Budibase is an open-source low-code platform used by businesses to build internal applications. A security flaw in the platform's public API allows users whose administrative or application-level permissions have been revoked to continue using those high-level privileges for up to one hour. This could allow a terminated employee or a user with downgraded access to continue viewing sensitive data or modifying applications during the synchronization delay.

Technologies: [Budibase Backend-Core](https://junglewise.ai/threats/technologies/backend-core), [@budibase/backend-core (npm)](https://junglewise.ai/threats/technologies/budibase-backend-core). Vendors: [Budibase](https://junglewise.ai/threats/vendors/budibase), [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-46424 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-46424 being exploited in the wild.

**How severe is CVE-2026-46424?** Medium severity, with a CVSS score of 4.2, published 27 May 2026.

**Which products and versions are affected?** Budibase Backend-Core < 3.38.2; @budibase/backend-core (npm) < 3.38.2, SEMVER:introduced=0,fixed=3.38.2.

**Is there a fix for CVE-2026-46424?** Yes. @budibase/backend-core (npm): upgrade to 3.38.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-46424 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-46424?** Check whether you run Budibase Backend-Core or @budibase/backend-core (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- @budibase/backend-core (npm): upgrade to 3.38.2 or later

  ```sh
  npm install @budibase/backend-core@3.38.2
  ```


## Technical details

A cache inconsistency exists in Budibase prior to version 3.38.2 within the public API role unassignment endpoint (POST /api/public/v1/roles/unassign). While the endpoint correctly updates user documents in CouchDB, it fails to invalidate the corresponding entries in the Redis user cache. The authentication middleware prioritizes this cache, which has a Time-To-Live (TTL) of 3600 seconds. Consequently, an attacker with a valid session whose roles (admin, builder, or app-level) are revoked via the public API can continue to perform authorized actions until the cache expires. This issue specifically affects the public API path; revocations performed via the standard Admin UI correctly trigger cache invalidation.

## Affected products

- Budibase Budibase < 3.38.2

## Identifiers

- CVE-2026-46424
- GHSA-6vp2-6r7m-2jvx

## Timeline

- 2026-05-13: patched: Fixed in version 3.38.2
- 2026-05-14: advisory: GitHub Security Advisory published
- 2026-05-27: disclosed: CVE published to NVD

## References

- [https://github.com/Budibase/budibase/releases/tag/3.38.2](https://github.com/Budibase/budibase/releases/tag/3.38.2)
- [https://github.com/Budibase/budibase/security/advisories/GHSA-6vp2-6r7m-2jvx](https://github.com/Budibase/budibase/security/advisories/GHSA-6vp2-6r7m-2jvx)

## Related threats

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- [Budibase insecure session cookie configuration leads to account takeover](https://junglewise.ai/threats/cve-2026-42239-budibase-insecure-session-cookie-configuration-leads-to-account)
- [Budibase: Authentication Bypass via Unanchored Regex in Public Endpoint Matcher , Unauthenticated Access to Protected Endpoints](https://junglewise.ai/threats/cve-2026-41428-budibase-authentication-bypass-via-unanchored-regex-in-public)
- [Budibase SSRF in REST datasource connector](https://junglewise.ai/threats/cve-2026-31818-budibase-ssrf-in-rest-datasource-connector)