CVE-2026-41176 (GCVE-0-2026-41176)

Vulnerability from cvelistv5 – Published: 2026-04-22 23:57 – Updated: 2026-06-30 12:08
VLAI Shadowserver KEVIntel
Title
Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Summary
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.
Severity
9.2 (Critical)
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-15 - External Control of System or Configuration Setting
Assigner
References
Impacted products
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2c111d36-9f60-4dbf-863b-2308f9998f4d

Vulnerability ID: CVE-2026-41176

Status: Confirmed

Status Updated: 2026-06-30 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2026-05-13
Asserted: 2026-05-13
Last Seen: 2026-06-30
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Rclone / Rclone | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-06-30: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Rclone
30D Avg 10
90D Avg 3
Product Rclone
Cisa Kev no
Connections 1
Observation Date 2026-06-30
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-06-30 09:23 UTC | Updated: 2026-07-01 05:21 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9564adb4-13e0-4337-99fd-cedc89d283d7

Vulnerability ID: CVE-2026-41176

Status: Confirmed

Status Updated: 2026-06-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-03
Asserted: 2026-06-03
Scope
Notes: KEVIntel entry: Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution | Affected: rclone / rclone | CVSS: 9.2 (CRITICAL) | EPSS: 0.35437 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Vendor rclone
Product rclone
Added Date 2026-06-03T00:00:00.000Z
Cvss Score 9.2
Epss Score 0.35437
Cvss Severity CRITICAL
Epss Percentile 0.98244
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-06-23 14:03 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.