Rclone · Rclone · CVE-2026-79781
**Name of the Vulnerable Software and Affected Versions**
rclone versions prior to 1.74.4
**Description**
The `serve s3` function contains a path traversal flaw. This allows attackers to read and overwrite root-level files by using dot-dot segments in S3 object keys. By sending requests with object keys such as `../root-secret.txt`, an attacker can escape the bucket namespace and access files within the serve root directory.
**Recommendations**
Update rclone to version 1.74.4 or later.