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.
History

Fri, 24 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-94
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important


Thu, 23 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Description 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.
Title RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution
Weaknesses CWE-306
CWE-78
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-23T00:03:36.282Z

Reserved: 2026-04-17T16:34:45.526Z

Link: CVE-2026-41179

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-23T00:16:45.947

Modified: 2026-04-24T14:50:56.203

Link: CVE-2026-41179

cve-icon Redhat

Severity : Important

Publid Date: 2026-04-23T00:03:36Z

Links: CVE-2026-41179 - Bugzilla

cve-icon OpenCVE Enrichment

No data.