CVE-2026-41176CRITICAL 9.8EPSS p98.2%

CVE-2026-41176CVE-2026-41176

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS35.44% probability of exploitation · percentile 98.2% · 2026-06-18T12:00:27Z
Published2026-04-23
Last modified2026-04-27

Underlying weaknesses· 1

CWE-306

References

  1. https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go
  2. https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go
  3. https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx
  4. https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx

1

TypeTargetConfidenceTier
WeaknessMissing Authentication for Critical Functioncwe-3060%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.