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Fencer Vulns
critical 9.8

CVE-2026-41176 in the critical feed json

Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution

published 2026-04-22 6 mo ago modified 2026-09-10 1 mo ago also BIT-rclone-2026-41176 , EUVD-2026-25142 , GHSA-25qr-6mpr-f7qx , GO-2026-4964 , JLSEC-2026-280

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
32.7%
EPSS 32.7% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

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.

Patch / fix

  • go github.com/rclone/rclone 1.73.5
  • bitnami rclone 1.73.5
  • julia Rclone_jll 1.73.5+0
  • rclone rclone 1.73.5
  • rclone Ubuntu 22.04 LTS 1.53.3-4ubuntu1.22.04.4
  • rclone Ubuntu 24.04 LTS 1.60.1+dfsg-3ubuntu0.24.04.5
  • rclone Ubuntu 25.10 1.60.1+dfsg-4ubuntu2.1
  • rclone Ubuntu 26.04 LTS 1.60.1+dfsg-4ubuntu3.1
  • rclone Ubuntu Pro 20.04 LTS 1.50.2-2ubuntu0.2+esm1

ubuntu advisories UBUNTU-CVE-2026-41176

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • rclone openSUSE Leap 16.0 1.74.4-bp160.1.1
  • rclone openSUSE Tumbleweed 1.73.5-1.1

opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2026:21436-1openSUSE-SU-2026:10584-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-41176 updated cvss 9.8

github.com/rclone/rclone: Rclone: Unauthorized access to administrative functions through unauthenticated Remote Control endpoint.

  • Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel9, oadp/oadp-mustgather-rhel9, oadp/oadp-velero-restic-restore-helper-rhel9
    not affected: vulnerable code not present
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/volsync-rhel9
    not affected: vulnerable code not in execute path

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
6 mo ago

Exploit prediction

32.71% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Rclone RC - Broken Access Control nuclei detection template
  • github.com https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 9.2 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
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 9.2 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
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/rclone/rclone
>=1.45.0, <1.73.5
<1.73.5
1.73.5
bitnami rclone
>=1.45.0, <1.73.5
1.73.5
julia Rclone_jll
<1.73.5+0
1.73.5+0

Affected products

  • rclone rclone
  • Red Hat OpenShift API for Data Protection
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality
  • CWE-15 External Control of System or Configuration Setting

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.