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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
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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

Nuclei Template
SCANNER AVAILABLE
EPSS Score
34.734%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityGitHub, Inc. · Vendor · USA
Reserved2026-04-17T16:34:45
Published2026-04-22T23:57:54
Last Updated2026-07-15T00:59:50

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