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.

The version of rclone installed on the remote host is prior to 1.55.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3285 advisory.

    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.
    (CVE-2026-41176)

    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. (CVE-2026-41179)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2bb2aee489 advisory.

    Update to 1.74.0


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-63341da831 advisory.

    Update to 1.74.0

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Rclone installed on the remote host is 1.45.x prior to 1.73.5. It is, therefore, affected by an authentication bypass vulnerability:

  - The RC endpoint options/set is exposed without AuthRequired, but it can mutate global runtime     configuration, including the RC option block itself. An unauthenticated attacker can set     rc.NoAuth=true, which disables the authorization gate for many RC methods on reachable RC     servers started without global HTTP authentication. This can lead to unauthorized access to     sensitive administrative functionality. (CVE-2026-41176)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2026-41176)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
314577	Amazon Linux 2 : rclone, --advisory ALAS2-2026-3285 (ALAS-2026-3285)	Nessus	Amazon Linux Local Security Checks	critical
313735	Fedora 43 : rclone (2026-2bb2aee489)	Nessus	Fedora Local Security Checks	critical
313720	Fedora 44 : rclone (2026-63341da831)	Nessus	Fedora Local Security Checks	critical
310201	openSUSE 16 Security Update : rclone (openSUSE-SU-2026:20620-1)	Nessus	SuSE Local Security Checks	critical
310056	Rclone 1.45.x < 1.73.5 Authentication Bypass (CVE-2026-41176)	Nessus	Misc.	critical
309983	Linux Distros Unpatched Vulnerability : CVE-2026-41176	Nessus	Misc.	critical

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