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

Quick assessment

Affected
the-hideout tarkov-data-manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tarkov Data Manager是The Hideout开源的一个数据库管理工具。 Tarkov Data Manager 2025年01月02日之前版本存在安全漏洞，该漏洞源于登录端点存在身份验证绕过，可能导致未经验证的用户获得管理员访问权限。

CVSS 9.8 · Critical EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-21854

Vulnerability Information
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Vulnerability Title
Tarkov Data Manager Authentication Bypass vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Tarkov Data Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tarkov Data Manager是The Hideout开源的一个数据库管理工具。 Tarkov Data Manager 2025年01月02日之前版本存在安全漏洞，该漏洞源于登录端点存在身份验证绕过，可能导致未经验证的用户获得管理员访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
the-hideout tarkov-data-manager <= 2.0.0 -

II. Public POCs for CVE-2026-21854

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III. Intelligence Information for CVE-2026-21854

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Patches & Fixes for CVE-2026-21854 (1)

Vendor Advisories for CVE-2026-21854 (1)

Same Patch Batch · the-hideout · 2026-01-07 · 3 CVEs total

CVE-2026-21855 9.3 CRITICAL Tarkov Data Manager has Unauthenticated Reflected XSS
CVE-2026-21856 7.2 HIGH Tarkov Data Manager has Authenticated SQL Injection

IV. Related Vulnerabilities

Same product: tarkov-data-manager
Same vendor: the-hideout
Same weakness: CWE-287

V. Comments for CVE-2026-21854

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