{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-79781", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-25T14:32:37.762Z", "datePublished": "2026-08-25T15:16:10.471Z", "dateUpdated": "2026-08-25T15:16:10.471Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-25T15:16:10.471Z"}, "datePublic": "2026-07-08T00:00:00.000Z", "title": "rclone serve s3 Path Traversal via dot-dot object keys", "descriptions": [{"lang": "en", "value": "rclone serve s3 before 1.74.4 contains a path traversal vulnerability that allows attackers to read and overwrite root-level files by using dot-dot segments in S3 object keys. Attackers can send requests with object keys like ../root-secret.txt to escape the bucket namespace and access files in the serve root directory."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "cweId": "CWE-22", "type": "CWE"}]}], "affected": [{"vendor": "rclone", "product": "rclone", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/rclone/rclone", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "1.74.4"}, {"version": "1.74.4", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.74.4"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-8v25-v8p6-qf7v", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-8v25-v8p6-qf7v)"}, {"name": "VulnCheck Advisory: rclone serve s3 Path Traversal via dot-dot object keys", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/rclone-serve-s3-path-traversal-via-dot-dot-object-keys"}], "credits": [{"lang": "en", "value": "Dangel165", "type": "reporter"}, {"lang": "en", "value": "ncw", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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