CVE-2026-72835

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72835", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-10T15:13:41.486Z", "datePublished": "2026-08-14T11:35:40.774Z", "dateUpdated": "2026-08-14T18:03:52.526Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-14T16:52:16.852Z"}, "datePublic": "2026-07-27T00:00:00.000Z", "title": "filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization", "descriptions": [{"lang": "en", "value": "filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Resolution of Path Equivalence", "cweId": "CWE-41", "type": "CWE"}]}], "affected": [{"vendor": "filebrowser", "product": "filebrowser", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/filebrowser/filebrowser/v2", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "2.63.21"}, {"version": "2.63.21", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.63.21"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-fgm5-pw99-w2p7)"}, {"name": "VulnCheck Advisory: filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization"}], "credits": [{"lang": "en", "value": "N1V6", "type": "reporter"}, {"lang": "en", "value": "hacdias", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-14T18:03:44.933867Z", "id": "CVE-2026-72835", "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": "2026-08-14T18:03:52.526Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72835", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-14T18:03:44.933867Z"}}}], "references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-14T18:03:18.585Z"}}], "cna": {"title": "filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization", "credits": [{"lang": "en", "type": "reporter", "value": "N1V6"}, {"lang": "en", "type": "finder", "value": "hacdias"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 7.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "filebrowser", "product": "filebrowser", "versions": [{"status": "affected", "version": "0", "lessThan": "2.63.21", "versionType": "semver"}, {"status": "unaffected", "version": "2.63.21", "versionType": "semver"}], "packageURL": "pkg:golang/github.com/filebrowser/filebrowser/v2", "defaultStatus": "unaffected"}], "datePublic": "2026-07-27T00:00:00.000Z", "references": [{"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7", "name": "GitHub Security Advisory (GHSA-fgm5-pw99-w2p7)", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization", "name": "VulnCheck Advisory: filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck-endgame"}, "descriptions": [{"lang": "en", "value": "filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-41", "description": "Improper Resolution of Path Equivalence"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.63.21"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-14T16:52:16.852Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72835", "state": "PUBLISHED", "dateUpdated": "2026-08-14T18:03:52.526Z", "dateReserved": "2026-08-10T15:13:41.486Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-08-14T11:35:40.774Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/filebrowser/filebrowser/v2", "product": "filebrowser", "vendor": "filebrowser", "versions": [{"lessThan": "2.63.21", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "2.63.21", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope."}], "id": "CVE-2026-72835", "lastModified": "2026-09-08T20:32:39.347", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72835", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-14T18:03:44.933867Z", "version": "2.0.3"}}]}, "published": "2026-08-14T12:16:46.930", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-41"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.63.21)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.63.21"}}], "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": "2026-08-14T12:45:16.919346+00:00", "updated": "2026-08-14T12:45:17.214408+00:00", "vendors": ["filebrowser", "filebrowser$PRODUCT$filebrowser"]}