CVE-2021-21402

{"containers": {"cna": {"affected": [{"product": "jellyfin", "vendor": "jellyfin", "versions": [{"status": "affected", "version": "< 10.7.1"}]}], "descriptions": [{"lang": "en", "value": "Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-23T19:35:12.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1"}], "source": {"advisory": "GHSA-wg4c-c9g9-rxhx", "discovery": "UNKNOWN"}, "title": "Unauthenticated Arbitrary File Access in Jellyfin", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21402", "STATE": "PUBLIC", "TITLE": "Unauthenticated Arbitrary File Access in Jellyfin"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "jellyfin", "version": {"version_data": [{"version_value": "< 10.7.1"}]}}]}, "vendor_name": "jellyfin"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}]}, "references": {"reference_data": [{"name": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx", "refsource": "CONFIRM", "url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx"}, {"name": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7", "refsource": "MISC", "url": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7"}, {"name": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1", "refsource": "MISC", "url": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1"}]}, "source": {"advisory": "GHSA-wg4c-c9g9-rxhx", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:16.077Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21402", "datePublished": "2021-03-23T19:35:13.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:16.077Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "jellyfin", "vendor": "jellyfin", "versions": [{"status": "affected", "version": "< 10.7.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*", "matchCriteriaId": "F1DD62BC-C2DF-4847-8580-CEA58D17D528", "versionEndExcluding": "10.7.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible."}, {"lang": "es", "value": "Jellyfin es un sistema multimedia de software libre.&#xa0;En Jellyfin versiones anteriores a 10.7.1, con determinados endpoints, las peticiones bien dise\u00f1adas permitir\u00e1n la lectura de archivos arbitrarios desde el sistema de archivos de un servidor Jellyfin.&#xa0;Este problema es m\u00e1s frecuente cuando es usado Windows como el Sistema Operativo host.&#xa0;Unos servidores que est\u00e1n expuestos a la Internet p\u00fablica est\u00e1n potencialmente en riesgo.&#xa0;Esto es corregido en versi\u00f3n 10.7.1.&#xa0;Como soluci\u00f3n alternativa, los usuarios pueden ser capaces de restringir algunos accesos imponiendo permisos de seguridad estrictos en su sistema de archivos; sin embargo, se recomienda actualizar lo antes posible"}], "id": "CVE-2021-21402", "lastModified": "2026-06-17T03:35:29.773", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-23T20:15:13.120", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7"}, {"source": "security-advisories@github.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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