Vulnerability · Published Apr 22, 2026 · Assigned by GitHub_M
CVE-2026-41176Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Critical 9.8
In plain English
A critical-severity missing authentication in rclone from rclone. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 32.7% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rclone | no fix listed | DEBIAN-CVE-2026-41176 |
| Debian:13 | rclone | no fix listed | DEBIAN-CVE-2026-41176 |
| Go | github.com/rclone/rclone | 1.73.5 | GHSA-25qr-6mpr-f7qx |
| Go | github.com/rclone/rclone | 1.73.5 | GO-2026-4964 |
| Ubuntu:22.04:LTS | rclone | 1.53.3-4ubuntu1.22.04.4 | UBUNTU-CVE-2026-41176 |
| Ubuntu:24.04:LTS | rclone | 1.60.1+dfsg-3ubuntu0.24.04.5 | UBUNTU-CVE-2026-41176 |
| Ubuntu:25.10 | rclone | 1.60.1+dfsg-4ubuntu2.1 | UBUNTU-CVE-2026-41176 |
| Ubuntu:26.04:LTS | rclone | 1.60.1+dfsg-4ubuntu3.1 | UBUNTU-CVE-2026-41176 |
| Ubuntu:26.10 | rclone | no fix listed | UBUNTU-CVE-2026-41176 |
Affected products (as reported)
Weakness: CWE-306, CWE-15 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx x_refsource_CONFIRM
- https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go x_refsource_MISC
- https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2026-41176 vdb-entry, x_refsource_REDHAT
- RHBZ#2460989 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41176.json x_sadp-csaf-vex