CVE-2026-21854: Tarkov Data Manager

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, an authentication bypass vulnerability in the login endpoint allows any unauthenticated user to gain full admin access to the Tarkov Data Manager admin panel by exploiting a JavaScript prototype property access vulnerability, combined with loose equality type coercion. A series of fix commits on 02 January 2025 fixed this and other vulnerabilities.

Affected products

• Tarkov Tarkov Data Manager: before 2025-01-02 (fixed in 2025-01-02)

Published 2026-01-07. Last modified 2026-06-17.