Critical severity9.3NVD Advisory· Published Jan 7, 2026· Updated Jun 17, 2026
CVE-2026-21855
CVE-2026-21855
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.
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Affected products
3<2025-01-02+ 1 more
- (no CPE)range: <2025-01-02
- (no CPE)range: <= 2.0.0
Patches
Vulnerability mechanics
References
1- github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-9c23-rrg9-jc89nvdExploitVendor Advisory
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