CVE-2026-41179

CRITICAL EPSS 94.3%
Published Apr 23, 20262mo ago · Modified Jun 17, 20262w ago
9.2 CVSS 4.0
Critical
Find Similar
Published Apr 23, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to version 1.73.5, the RC endpoint `operations/fsinfo` is exposed without `AuthRequired: true` and accepts attacker-controlled `fs` input. Because `rc.GetFs(...)` supports inline backend definitions, an unauthenticated attacker can instantiate an attacker-controlled backend on demand. For the WebDAV backend, `bearer_token_command` is executed during backend initialization, making single-request unauthenticated local command execution possible on reachable RC deployments without global HTTP authentication. Version 1.73.5 patches the issue.

CVSS Details

Base Score
9.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
94.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-306 Missing Authentication for Critical Function Authentication
CWE-78 OS Command Injection Injection

Affected Products 1

VendorProductVersionRange
rclonerclone*≥1.48.0  –  <1.73.5

References 7

  • github.com https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/backend/webdav/webdav.go
    Product
  • github.com https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/operations/rc.go
    Product
  • github.com https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/cache.go
    Product
  • github.com https://github.com/rclone/rclone/commit/2a9e952b38e03a96bf40c9eb6e8e22199865ee3b
  • github.com https://github.com/rclone/rclone/releases/tag/v1.73.5
  • github.com https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q
    ExploitVendor Advisory
  • rclone.org https://rclone.org/changelog/#v1-73-5-2026-04-19

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.