CVE-2026-71311 Details
Description
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.
A command injection vulnerability has been identified in Rclone versions prior to 1.75.0, specifically within the FTP backend. The issue arises when a valid but nondefault FTP filename encoding allows raw carriage return and line feed (CR/LF) characters to be injected into the FTP control channel. This injection occurs just before an attacker-controlled path is processed, enabling the execution of unauthorized FTP commands. The vulnerability is exploitable when files are synced to a higher-privileged FTP destination that uses a manually configured encoding allowing CR/LF to remain raw.
Users can update to Rclone version 1.75.0 or later, where this vulnerability has been fixed. Additionally, avoid using FTP encoding configurations that can restore CR/LF characters.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 6, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-93 | Improper Neutralization of CRLF Sequences ('CRLF Injection') | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | CVE Modified | CISA-ADP |
| Aug 5, 2026 | New CVE Received | [email protected] |