CVE-2026-45223 – Crabbox < 0.9.0 Authentication Bypass via Admin Claim Injection

CVE ID :CVE-2026-45223

Published : May 11, 2026, 7:16 p.m. | 43 minutes ago

Description :Crabbox before 0.9.0 contains an authentication bypass vulnerability in the coordinator user-token verification path where the verifyUserToken() function fails to reject payloads containing an admin claim, allowing attackers to escalate privileges. An attacker with access to the shared non-admin token can craft a user-token payload with admin: true, sign it using HMAC-SHA256, and present it to admin-only coordinator routes to gain full coordinator admin access including lease visibility, pool state management, and forced release operations.

Severity: 8.8 | HIGH

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