Missing Authentication for Critical Function Affecting rclone package, versions <0:1.73.5-75.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
34.53% (99th percentile)

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  • Snyk IDSNYK-AMZN2023-RCLONE-16710448
  • published16 May 2026
  • disclosed23 Apr 2026

Introduced: 23 Apr 2026

CVE-2026-41176  (opens in a new tab)
CWE-306  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 rclone to version 0:1.73.5-75.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1658.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rclone package and not the rclone package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1