Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw
- https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setu
- https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw
FAQ
What is CVE-2026-79783?
CVE-2026-79783 is a vulnerability with a CVSS score of 3.6 (LOW). 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. ...
How severe is CVE-2026-79783?
CVE-2026-79783 has been rated LOW with a CVSS base score of 3.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-79783?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.