the-hideout tarkov-data-manager up to 2.0.0 URL cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in the-hideout tarkov-data-manager up to 2.0.0 and classified as problematic. This affects an unknown function of the component URL Handler. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2026-21855. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in the-hideout tarkov-data-manager up to 2.0.0 and classified as problematic. This vulnerability affects an unknown code of the component URL Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-21855 since 01/05/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 2025 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

CNA Base Score: 9.3
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: tarkov-data-manager 2025

Timelineinfo

01/05/2026 CVE reserved
01/07/2026 +2 days Advisory disclosed
01/07/2026 +0 days VulDB entry created
02/03/2026 +27 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-9c23-rrg9-jc89
Status: Confirmed

CVE: CVE-2026-21855 (🔒)
GCVE (CVE): GCVE-0-2026-21855
GCVE (VulDB): GCVE-100-339952

Entryinfo

Created: 01/07/2026 22:27
Updated: 02/03/2026 18:17
Changes: 01/07/2026 22:27 (65), 02/03/2026 18:17 (11)
Complete: 🔍
Cache ID: 216::103

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