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vuln-cve/data/2026/21xxx/CVE-2026-21855.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-21855",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-01-05T16:44:16.366Z",
"datePublished": "2026-01-07T18:16:02.728Z",
"dateUpdated": "2026-01-07T18:37:42.582Z"
},
"containers": {
"cna": {
"title": "Tarkov Data Manager has Unauthenticated Reflected XSS",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-9c23-rrg9-jc89",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-9c23-rrg9-jc89"
}
],
"affected": [
{
"vendor": "the-hideout",
"product": "tarkov-data-manager",
"versions": [
{
"version": "<= 2.0.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-01-07T18:16:02.728Z"
},
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"source": {
"advisory": "GHSA-9c23-rrg9-jc89",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-01-07T18:37:18.701602Z",
"id": "CVE-2026-21855",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-01-07T18:37:42.582Z"
}
}
]
}
}