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TI-2026-17556 Aliases CVE-2026-21854

Tarkov Data Manager Authentication Bypass vulnerability

Priority HIGH 82CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287, CWE-843 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00462 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
the-hideouttarkov-data-managerup to 2.0.0—No fix listedCNA
  • tarkov-data-manager Vendorthe-hideout Affected up to 2.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tarkov:tarkov_data_manager:*:*:*:*:*:*:*:*before 2025-01-02Vulnerablethe-hideout
  • cpe:2.3:a:tarkov:tarkov_data_manager:*:*:*:*:*:*:*:* Versions before 2025-01-02 Vulnerable ·the-hideout

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21854

References

Patch 1

Advisory 1

  • TI-2026-17558 Tarkov Data Manager has Authenticated SQL Injection CVSS 3.1HIGH 8.8
  • TI-2026-17557 Tarkov Data Manager has Unauthenticated Reflected XSS CVSS 3.1CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences