Vulnerability in Rclone
CVE-2026-88016
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.002 (8.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Rclone — versions < 1.75.1
Weakness classification (CWE)
References
- github.com/rclone/rclone/security/advisories/GHSA-f8g7-2xjc-7mfh (Vendor Advisory)
- github.com/rclone/rclone/commit/17b0c03338a857bcb0a68d2d4c82ddbdec3f7893 (Patch)
- github.com/rclone/rclone/commit/a7ab39d3d1958afa1446982c1dc4e4a73a887e3e (Patch)
- github.com/rclone/rclone/releases/tag/v1.75.1 (Release Notes)
Frequently asked questions
- What is CVE-2026-88016?
- CVE-2026-88016 is a high-severity vulnerability in Rclone, classified under Improper Link Resolution Before File Access. CVSS score: 7.1/10. Published 2026-09-10.
- How severe is CVE-2026-88016?
- High severity. CVSS v3 base score is 7.1 out of 10.