CVE-2026-41176

Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution

Published Apr 22, 2026 CVSS 4.0 · 9.2 Critical EPSS 32.7% KEV · Not listed
Description
Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-25qr-6mpr-f7qx Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Ubuntu USN Ubuntu USN USN-8299-1 Rclone vulnerabilities
History
Type Values Removed Values Added
First Time appeared Rclone
Rclone rclone
CPEs cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*
Vendors & Products Rclone
Rclone rclone
Type Values Removed Values Added
Weaknesses CWE-15
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

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.
Title Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Weaknesses CWE-306
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 15, 2026, 12:59 AM
Reserved
Apr 17, 2026, 4:34 PM
Status
Modified
Published
Apr 23, 2026, 12:16 AM
Modified
Nov 11, 2026, 11:10 PM
Severity
Important
Public date
Apr 22, 2026, 11:57 PM