UBUNTU-CVE-2026-49980

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.

CVSS Metrics

• v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

• ubuntu•rclone

  all | all | all | all

References (3)

• https://ubuntu.com/security/CVE-2026-49980
• https://www.cve.org/CVERecord?id=CVE-2026-49980
• https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv