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vuln-cve/data/2026/49xxx/CVE-2026-49247.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-49247",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-28T14:33:01.178Z",
"datePublished": "2026-06-24T18:18:46.137Z",
"dateUpdated": "2026-06-26T03:55:58.837Z"
},
"containers": {
"cna": {
"title": "Jellyfin: Potential Authenticated path traversal in /ClientLog/Document",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"lang": "en",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-jg92-mrxq-vv75",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-jg92-mrxq-vv75"
}
],
"affected": [
{
"vendor": "jellyfin",
"product": "jellyfin",
"versions": [
{
"version": ">= 10.9.0, < 10.11.10",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-06-24T18:18:46.137Z"
},
"descriptions": [
{
"lang": "en",
"value": "Jellyfin is an open source self hosted media server. From 10.9.0 until 10.11.10, the POST /ClientLog/Document endpoint accepts the Authorization header's Client and Version fields and uses them unsanitized as components of the on-disk filename when persisting client-uploaded log documents. As a result, any authenticated non-admin user can include ../ sequences in the Client field to cause Jellyfin to write attacker-controlled content to arbitrary paths reachable by the Jellyfin service user, with a forced .log suffix. This vulnerability is fixed in 10.11.10."
}
],
"source": {
"advisory": "GHSA-jg92-mrxq-vv75",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-25T00:00:00+00:00",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3",
"id": "CVE-2026-49247"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-26T03:55:58.837Z"
}
}
]
}
}