What’s Vulnerable › Vulnerabilities

CVE-2026-21854: Tarkov Data Manager Authentication Bypass vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-07 · updated 2026-06-17
• Weakness: CWE-287

Description

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

• the-hideout tarkov-data-manager: before 2025-01-02 — fixed in 2025-01-02

How to fix

Upgrade to a fixed version: the-hideout tarkov-data-manager 2025-01-02. Check the vendor advisory for mitigations.

References

• https://github.com/the-hideout/tarkov-data-manager/commit/f188f0abf766cefe3f1b7b4fc6fe9dad3736174a
• https://github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-r8w6-9xwg-6h73

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