CVE-2026-21855 — Tarkov Data Manager has Unauthenticated Reflected XSS
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…
Published: 2026-01-07 · CVSS: 9.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7