Is CVE-2026-73306 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73306?

CVE-2026-73306 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-73306

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.