Vulnerability · Published Aug 5, 2026 · Assigned by GitHub_M
CVE-2026-71309rclone: Incomplete path validation allows backend root escape in serve restic
High 8.6
In plain English
A high-severity path traversal in rclone from rclone. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.40.0 until 1.75.0, rclone serve restic does not correctly reject URL paths beginning with ../ in cmd/serve/restic/restic.go WithRemote, which accepts a leading parent path and passes it to GET, HEAD, POST, and DELETE handlers for configured backends including WebDAV, FTP, HTTP, Memory, and SFTP. An attacker who can access the REST endpoint may read, create, overwrite, or delete objects outside the path configured by the operator when the operator publishes a backend subdirectory and the backend credential can access parent or sibling objects. This issue is fixed in 1.75.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rclone | no fix listed | DEBIAN-CVE-2026-71309 |
| Debian:13 | rclone | no fix listed | DEBIAN-CVE-2026-71309 |
| Go | github.com/rclone/rclone | 1.75.0 | GHSA-45pq-889g-fcgh |
| Go | github.com/rclone/rclone | 1.75.0 | GO-2026-6184 |
| Ubuntu:26.10 | rclone | no fix listed | UBUNTU-CVE-2026-71309 |
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/rclone/rclone/security/advisories/GHSA-45pq-889g-fcgh x_refsource_CONFIRM
- https://github.com/rclone/rclone/commit/cc5a189f00efe68ed0ddb32d3237b42549a9f264 x_refsource_MISC
- https://github.com/rclone/rclone/releases/tag/v1.75.0 x_refsource_MISC