CVE-2026-62685

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62685", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T20:22:04.395Z", "datePublished": "2026-07-15T15:47:23.539Z", "dateUpdated": "2026-07-20T14:51:55.327Z"}, "containers": {"cna": {"title": "File Browser: Colliding username normalization gives two users the same home directory", "problemTypes": [{"descriptions": [{"cweId": "CWE-647", "lang": "en", "description": "CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-706", "lang": "en", "description": "CWE-706: Use of Incorrectly-Resolved Name or Reference", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7"}, {"name": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387", "tags": ["x_refsource_MISC"], "url": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387"}, {"name": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17", "tags": ["x_refsource_MISC"], "url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17"}], "affected": [{"vendor": "filebrowser", "product": "filebrowser", "versions": [{"version": "< 2.63.17", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T15:47:23.539Z"}, "descriptions": [{"lang": "en", "value": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user's files. This issue is fixed in version 2.63.17."}], "source": {"advisory": "GHSA-7rc3-g7h6-22m7", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-20T14:51:43.918375Z", "id": "CVE-2026-62685", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-20T14:51:55.327Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-62685", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-20T14:51:43.918375Z"}}}], "references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-20T14:51:29.608Z"}}], "cna": {"title": "File Browser: Colliding username normalization gives two users the same home directory", "source": {"advisory": "GHSA-7rc3-g7h6-22m7", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "filebrowser", "product": "filebrowser", "versions": [{"status": "affected", "version": "< 2.63.17"}]}], "references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7", "name": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387", "name": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17", "name": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user's files. This issue is fixed in version 2.63.17."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-647", "description": "CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-706", "description": "CWE-706: Use of Incorrectly-Resolved Name or Reference"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T15:47:23.539Z"}}}, "cveMetadata": {"cveId": "CVE-2026-62685", "state": "PUBLISHED", "dateUpdated": "2026-07-20T14:51:55.327Z", "dateReserved": "2026-07-14T20:22:04.395Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-15T15:47:23.539Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "filebrowser", "vendor": "filebrowser", "versions": [{"status": "affected", "version": "< 2.63.17"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user's files. This issue is fixed in version 2.63.17."}], "id": "CVE-2026-62685", "lastModified": "2026-07-20T16:17:06.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62685", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-20T14:51:43.918375Z", "version": "2.0.3"}}]}, "published": "2026-07-15T16:16:51.783", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387"}, {"source": "security-advisories@github.com", "url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17"}, {"source": "security-advisories@github.com", "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-647"}, {"lang": "en", "value": "CWE-706"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.63.17)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "filebrowser", "source": "cna", "vendor": "filebrowser"}, "product": "filebrowser", "vendor": "filebrowser"}], "created": "2026-07-15T19:15:14.685241+00:00", "updated": "2026-07-31T03:30:18.074848+00:00", "vendors": ["filebrowser", "filebrowser$PRODUCT$filebrowser"]}