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Critical · 9.3 CVE-2026-21855 EUVD-2026-1400

Tarkov Data Manager has Unauthenticated Reflected XSS

Published Jan 7, 2026 · Updated Jan 7, 2026 · Assigned by GitHub_M

Description

The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, a reflected Cross Site Scripting (XSS) vulnerability in the toast notification system allows any attacker to execute arbitrary JavaScript in the context of a victim's browser session by crafting a malicious URL. A series of fix commits on 02 January 2025 fixed this and other vulnerabilities.

Affected products

VendorProductAffectedFixed
the-hideout tarkov-data-manager <= 2.0.0 —

References