# CVE-2026-73306

## Summary

- **CVE ID:** CVE-2026-73306
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-204
- **Published:** Aug 12, 2026
- **Last Modified:** Aug 13, 2026

## Description

Budibase is an open-source low-code platform. Prior to 3.39.25, POST /api/global/auth/:tenantId/login incremented the failure counter in packages/worker/src/api/controllers/global/auth.ts only for existing users, while packages/worker/src/middleware/emailLockout.ts returned X-Account-Locked and Retry-After only for locked identifiers. An unauthenticated attacker could compare the response after repeated failures to enumerate valid email addresses and temporarily lock valid accounts. This issue is fixed in version 3.39.25.

## Affected Products

- Budibase — budibase (< 3.39.25)

## References

- [CNA](https://github.com/Budibase/budibase/security/advisories/GHSA-cr7p-cr3q-h5cm)
- [CNA](https://github.com/Budibase/budibase/pull/19108)
- [CNA](https://github.com/Budibase/budibase/commit/eaae816ab81615c07eb10e4619af078d00e2a706)
- [CNA](https://github.com/Budibase/budibase/releases/tag/3.39.25)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.42%
- **EPSS Percentile:** 35.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._