Vulnerability Intelligence Report
Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
CVE-2026-41176
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.
Nuclei Template
CVSS Base Score
9.2
CRITICAL
EPSS Probability:34.73%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
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SSVC Action
—
Weaknesses (CWE)
CWE-306 ↗CWE-306: Missing Authentication for Critical Function
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| rclone | rclone | >= 1.45.0, < 1.73.5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-04-17T16:34:45 |
| Published | 2026-04-22T23:57:54 |
| Last Updated | 2026-07-15T00:59:50 |
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