Bug 2460989 (CVE-2026-41176)

Summary:	CVE-2026-41176 github.com/rclone/rclone: Rclone: Unauthorized access to administrative functions through unauthenticated Remote Control endpoint.
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aazores, alcohan, cmah, dymurray, eaguilar, ebaron, gparvin, jbalunas, jmatthew, jolong, pahickey, pjindal, rhaigner, rjohnson, whayutin
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Rclone, a command-line program designed for synchronizing files with various cloud storage providers. An unauthenticated attacker can exploit an exposed Remote Control (RC) endpoint, `options/set`, to disable the authorization mechanism for other RC methods. This vulnerability allows the attacker to gain unauthorized access to sensitive administrative functionality, including configuration and operational control of the Rclone server.	Story Points:	---
Clone Of:		Environment:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2464138, 2464139, 2464140, 2464141, 2464142, 2464143, 2464144, 2461127, 2461128
Bug Blocks:

Description OSIDB Bzimport 2026-04-23 01:01:34 UTC

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.