CVE-2026-41179
Description
A flaw was found in Rclone, a command-line program for syncing files with cloud storage. An unauthenticated attacker can exploit an exposed Remote Control (RC) endpoint, operations/fsinfo, to instantiate a malicious backend. This allows the attacker to execute arbitrary local commands during backend initialization, leading to unauthenticated local command execution on reachable RC deployments.
Statement
The vulnerable functionality exists in the RC server. Thus, for the vulnerability to be exploited, the RC server must be started, via rclone rcd or the --rc flag. Additionally, the RC server must be deployed without any required authentication. Because Red Hat products either do not include this functionality, or expose it only to localhost, Red Hat assesses the impact of this vulnerability as Important.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 9.8 | 9.8 | 9.8 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | None | None | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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