CVE-2026-79781
Medium
Description
rclone serve s3 before 1.74.4 contains a path traversal vulnerability that allows attackers to read and overwrite root-level files by using dot-dot segments in S3 object keys. Attackers can send requests with object keys like ../root-secret.txt to escape the bucket namespace and access files in the serve root directory.
SeverityMedium
CVSS6.5
Exploit probability—
ProductGithub.com/rclone/rclone
PublishedAug 25, 2026
First seenAug 25, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- github.com/rclone/rclone1.74.4 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/rclone/rcloneGo | v < 1.74.4 | 1.74.4 |
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