CVE-2026-41179: Rclone

Critical severity, CVSS 9.8. EPSS: 5.3% chance of exploitation in the next 30 days.

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to version 1.73.5, the RC endpoint `operations/fsinfo` is exposed without `AuthRequired: true` and accepts attacker-controlled `fs` input. Because `rc.GetFs(...)` supports inline backend definitions, an unauthenticated attacker can instantiate an attacker-controlled backend on demand. For the WebDAV backend, `bearer_token_command` is executed during backend initialization, making single-request unauthenticated local command execution possible on reachable RC deployments without global HTTP authentication. Version 1.73.5 patches the issue.

Affected products

• Rclone Rclone: from 1.48.0, before 1.73.5 (fixed in 1.73.5)

Published 2026-04-23. Last modified 2026-07-15.