CVE-2026-88016

Summary

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, when backend/local runs with –links, a source .rclonelink object can plant a symlink in the destination and later directory metadata is applied through that path. MkdirMetadata, writeMetadataToFile, and setTimes operate when Directory.translatedLink=false, so os.Chown, os.Chmod, os.Chtimes, and birth-time handling can bypass os.Root confinement and follow the symlink. An attacker controlling source contents can therefore apply selected ownership, permissions, modification times, or birth times to a file or directory outside the destination, with –metadata required for chmod and chown while modification time is applied by the normal directory workflow. This issue is fixed in version 1.75.1.

Affected Software

VendorProductVersion RangeStatus
rclonerclone< 1.75.1affected

Weaknesses

  • CWE-59: CWE-59: Improper Link Resolution Before File Access ('Link Following')
  • CWE-281: CWE-281: Improper Preservation of Permissions

References