Bug 2531539 (CVE-2026-88016) - CVE-2026-88016 rclone: rclone: Directory metadata escape via planted symlink allows unauthorized file modification
Summary: CVE-2026-88016 rclone: rclone: Directory metadata escape via planted symlink ...
Keywords:
Status: NEW
Alias: CVE-2026-88016
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2536986 2536987
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-10 16:07 UTC by OSIDB Bzimport
Modified: 2026-09-18 11:47 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-10 16:07:32 UTC
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.


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