PT-2026-2103 · Unknown · Tarkov Data Manager

Sut0L · Published 2026-01-07 · Updated 2026-02-03 · CVE-2026-21855

Positive Technologies (AI Summary)

CVSS v3.1

9.3

Critical

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Tarkov Data Manager versions prior to 02 January 2025

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 exists in the toast notification system. This allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session by crafting a malicious URL. The vulnerability was addressed with a series of fix commits on 02 January 2025.

Recommendations Versions prior to 02 January 2025 should be updated.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-21855

GHSA-9C23-RRG9-JC89

Affected Products

Tarkov Data Manager

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21855.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-21855 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21855 · Security Note
• https://github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-9c23-rrg9-jc89 · Note
• https://twitter.com/CveFindCom/status/2008986783191531559 · Twitter Post
• https://t.me/CVEtracker/41635 · Telegram Post
• https://t.me/cveNotify/150745 · Telegram Post
• https://twitter.com/TheHackerWire/status/2008988891978543137 · Twitter Post
• https://twitter.com/CVEnew/status/2009020534970032191 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2009065483669066032 · Twitter Post