CVE-2026-49980

Critical

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.

SeverityCritical
CVSS9.8
Exploit probability—
ProductRclone
PublishedJun 24, 2026
First seenJun 24, 2026

How to fix

Update
  • rclone rclone1.74.3 or later
  • github.com/rclone/rclone1.74.3 or later

Affected products

ProductAffected versionsFixed in
rclone rclone1.46 ≤ v < 1.74.31.74.3
github.com/rclone/rcloneGo1.46.0 ≤ v < 1.74.3, 1.49.0 ≤ v < 1.74.31.74.3
github.com/ncw/rcloneGo1.46.0 ≤ v—

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