OS Command Injection in rclone - CVE-2026-41179
Published: April 20, 2026
Vulnerability identifier: #VU126499
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red
CVE-ID: CVE-2026-41179
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: rclone.org
Affected software:
rclone
rclone
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary commands.
The vulnerability exists due to improper neutralization of special elements used in an os command in the operations/fsinfo RC endpoint when processing attacker-controlled fs input that instantiates an inline WebDAV backend. A remote attacker can send a specially crafted request to execute arbitrary commands.
Exploitation requires the remote control API to be enabled, reachable by the attacker, and deployed without global RC HTTP authentication.
How to mitigate CVE-2026-41179
Install security update from vendor's website.