{"id":"CVE-2026-79783","summary":"rclone before 1.74.4 Privilege Escalation via setuid Metadata","details":"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 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.","aliases":["GHSA-945v-v9p3-v5xw","GO-2026-6190"],"modified":"2026-08-27T11:47:49.070472374Z","published":"2026-08-25T15:16:11.806Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79783.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-732"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79783.json"},{"type":"ADVISORY","url":"https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79783"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rclone/rclone","events":[{"introduced":"0"},{"fixed":"5bc93a2a7ab0ebd0a11352bc4968eabeffb18027"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"fixed":"1.74.4"}]}}],"versions":["v1.74.3","v1.74.2","v1.74.1","v1.74.0","v1.73.0","v1.72.0","v1.71.0","v1.70.0","v1.69.0","v1.68.0","v1.67.0","v1.66.0","v1.65.0","v1.64.0","v1.63.0","v1.62.0","v1.61.0","v1.60.0","v1.59.0","v1.58.0","v1.57.0","v1.56.0","v1.55.0","v1.54.0","v1.53.0","v1.52.0","v1.51.0","v1.50.0","v1.49.0","v1.48.0","v1.47.0","v1.46.0","v1.46","v1.45","v1.44","v1.43","v1.42","v1.41","v1.40","v1.39","v1.38","v1.37","v1.36","v1.35","v1.34","v1.33","v1.32","v1.31","v1.30","v1.29-1-gbb75d80","v1.29","v1.28","v1.27","v1.26","v1.25","v1.24","v1.23","v1.22","v1.21","v1.20","v1.19","v1.18","v1.17","v1.16","v1.15","v1.14","v1.13","v1.12","v1.11","v1.10","v1.09","v1.08","v1.07","v1.06","v1.05","v1.04","v1.03","v1.01","v1.00","v0.99","v0.98","v0.97","v0.96","v0.95","v0.94","v0.93","v0.92","v0.91","v0.90"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79783.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}