What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-09-09
• Weakness: CWE-93

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.

Affected products

• rclone: before 1.75.0

References

• https://github.com/rclone/rclone/commit/1df2b70753286c1dfe8366078cbedfdf7f96472c
• https://github.com/rclone/rclone/releases/tag/v1.75.0
• https://github.com/rclone/rclone/security/advisories/GHSA-8c48-q9wj-3w37
• https://github.com/rclone/rclone/security/advisories/GHSA-8c48-q9wj-3w37

Get alerted when CVE-2026-71311 or the next vulnerability affects your stack