CVE-2026-71311 MEDIUM

CVE-2026-71311: rclone: FTP Command Arguments Permit CRLF Injection When Custom Encoding Preserves Newlines

Vendor Rclone
Product rclone
Weakness CWE-93 · CRLF injection
Published August 5, 2026
Last update August 6, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H

What the vulnerability does

01Description

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, a valid but nondefault FTP filename encoding in backend/ftp/ftp.go can restore raw CR/LF immediately before an attacker-controlled path is interpolated into the line-oriented FTP control channel, and github.com/jlaffaye/ftp formats the argument through textproto.Conn.Cmd without rejecting CR or LF, allowing a filename such as victim CRLF DELE other-secret CRLF NOOP to inject an independent authenticated FTP command when the victim copies or syncs to a more-privileged FTP destination. This issue is fixed in 1.75.0.

Key dates

02Disclosure timeline

August 5, 2026 CVE published
August 6, 2026 Record updated

Related vulnerabilities

04Related CVE