CVE-2026-72588: Bluewave-Labs Checkmate

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.

Affected products

• Bluewave-Labs Checkmate: up to and including 2.1.0

Published 2026-08-10. Last modified 2026-08-28.