CVE-2026-41176

CRITICAL EXPLOITED NUCLEI

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

Title source: cna
STIX 2.1

Exploitation Summary

CVE-2026-41176 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.

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.

Nuclei Templates (1)

Rclone RC - Broken Access Control
CRITICALVERIFIEDby theamanrawat

References (3)

Core 3

Scores

CVSS v3 9.8
EPSS 0.2632
EPSS Percentile 96.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

VulnCheck KEV 2026-05-13
CWE
CWE-306
Status published
Products (3)
rclone/rclone 1.45 - 1.73.5
rclone/rclone 1.45.0 - 1.73.5Go
rclone/rclone >= 1.45.0, < 1.73.5
Published Apr 23, 2026
Tracked Since Apr 23, 2026