CVE-2026-21854

CRITICAL

Tarkov Data Manager < 2025-01-02 - Unauthenticated Authentication Bypass via Prototype Pollution

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 9.8
EPSS 0.0040
EPSS Percentile 31.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-1321 CWE-287 CWE-843
Status published
Products (1)
tarkov/tarkov_data_manager < 2025-01-02
Published Jan 07, 2026
Tracked Since Feb 18, 2026