by Kastro
Paper/Archive/CVE-2026-21854

CVE-2026-21854

the-hideout tarkov-data-manager — Tarkov Data Manager Authentication Bypass vulnerability

EPSS 0.5%public exploitCVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.1.401 × 208.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
tarkov-data-manager<= 2.0.0–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-r8w6-9xwg-6h73refgithub.com/the-hideout/tarkov-data-manager/commit/f188f0abf766cefe3f1b7b4fc6fe9dad3736174a