CVE-2026-49980
Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix
CVSS Score
9.8
EPSS Score
0.8%
EPSS Percentile
52th
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.
| CWE | CWE-306 |
| Vendor | rclone |
| Product | rclone |
| Published | Jun 24, 2026 |
| Last Updated | Aug 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
rclone / rclone
>= 1.46.0, < 1.74.3
References
github.com: https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-49980 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2492478 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49980.json