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CVE-2026-41176

Rclone authentication bypass

9.8 CRITICALPublic exploitEPSS 3.22%
  1. Published22 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Rclone≥ 1.45 < 1.73.5

Remediation

Fixed in
Rclone≥ 1.73.5

References

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Frequently asked

Is CVE-2026-41176 being actively exploited?

CVE-2026-41176 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 3.22%.

How severe is CVE-2026-41176?

CVE-2026-41176 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 3.22% probability of exploitation.

Which products are affected by CVE-2026-41176?

Affected products include Rclone.

How do I fix CVE-2026-41176?

Upgrade affected software to a fixed version, for example Rclone 1.73.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41176 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.