Unauthenticated Command Execution Vulnerability in Rclone by Rclone
CVE-2026-41179

9.2CRITICAL

Key Information:

Vendor

Rclone

Status
Rclone
Vendor
CVE Published:
23 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-41179?

The Rclone tool, designed for file synchronization with various cloud storage systems, has a vulnerability stemming from the unsecured RC endpoint operations/fsinfo. In versions 1.48.0 through 1.73.4, this endpoint allows unauthenticated attackers to send controlled fs input, which can instantiate malicious backends. Particularly concerning is the WebDAV backend that executes bearer_token_command upon its initialization, leading to potential local command execution without requiring authorization. This serious flaw highlights the importance of implementing proper authentication measures in cloud synchronization tools.

Affected Version(s)

rclone >= 1.48.0, < 1.73.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-41179
Created by s-vx

References

https://github.com/rclone/rclone/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/rclone/rclone/commit/2a9e952b38e03a96b...
x_refsource_MISC
https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a...
x_refsource_MISC

EPSS Score

8% chance of being exploited in the next 30 days.

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.