{"id":"CVE-2026-79783","title":"rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files","summary":"rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservati…","severity":"low","cvss":3.6,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-732"],"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-2026-79783","references":[{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata","label":"disclosure@vulncheck.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/rclone/rclone/commit/e58f09739a35774ca82b5211d2377ac0f2051500"},{"url":"https://github.com/rclone/rclone"},{"url":"https://github.com/rclone/rclone/releases/tag/v1.74.4"}],"tags":["nvd","osv","go"],"epss":0.0014,"epssPercentile":0.03744,"aliases":["GHSA-945v-v9p3-v5xw","GO-2026-6190"],"ecosystem":"go","ingestedAt":"2026-08-27T19:27:46.623Z","slug":"CVE-2026-79783","body":"## Overview\n\nrclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid binary that escalates privileges to root if rclone runs as root, or to the service account user otherwise.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-79783)\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-945v-v9p3-v5xw","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":19.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}