What’s Vulnerable › Vulnerabilities

CVE-2026-73306: Budibase: Account Enumeration via Login Lockout Response Differential

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-12 · updated 2026-09-08
• Weakness: CWE-204

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: before 3.39.25

References

• https://github.com/Budibase/budibase/commit/eaae816ab81615c07eb10e4619af078d00e2a706
• https://github.com/Budibase/budibase/pull/19108
• https://github.com/Budibase/budibase/releases/tag/3.39.25
• https://github.com/Budibase/budibase/security/advisories/GHSA-cr7p-cr3q-h5cm
• https://github.com/Budibase/budibase/security/advisories/GHSA-cr7p-cr3q-h5cm

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