{"id":"CVE-2026-79781","title":"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","summary":"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-sec…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-22"],"vendor":"rclone","product":"github.com/rclone/rclone","affected":["github.com/rclone/rclone < 1.74.4"],"patched":["github.com/rclone/rclone 1.74.4"],"published":"2026-08-25","updated":"2026-09-10","sourceUpdated":"2026-09-10T20:46:19.780","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79781","references":[{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-8v25-v8p6-qf7v","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/rclone-serve-s3-path-traversal-via-dot-dot-object-keys","label":"disclosure@vulncheck.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-8v25-v8p6-qf7v","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/rclone/rclone/commit/83d1e62aa9e0dbd10a5d7eb34c117ae997268cdf"},{"url":"https://github.com/rclone/rclone/commit/c89b766cf417fddbe7eace40d31262ecb85bfa93"},{"url":"https://github.com/rclone/rclone"},{"url":"https://github.com/rclone/rclone/releases/tag/v1.74.4"}],"tags":["nvd","osv","go"],"epss":0.00255,"epssPercentile":0.17312,"aliases":["GHSA-8v25-v8p6-qf7v","GO-2026-6189"],"ecosystem":"go","ingestedAt":"2026-08-27T19:27:46.582Z","slug":"CVE-2026-79781","body":"## Overview\n\nrclone 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-79781)\n\nAffected packages:\n\n- `github.com/rclone/rclone < 1.74.4`\n\nPatched in:\n\n- `github.com/rclone/rclone 1.74.4`\n\nSource: https://osv.dev/vulnerability/GHSA-8v25-v8p6-qf7v","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}