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Fencer Vulns
critical 9.8

CVE-2026-49980 json

Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix

published 2026-06-16 4 mo ago modified 2026-09-10 1 mo ago also BIT-rclone-2026-49980 , EUVD-2026-39018 , GHSA-qw24-gh76-8rvv , GO-2026-5596

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.

Patch / fix

  • go github.com/rclone/rclone 1.74.3
  • bitnami rclone 1.74.3
  • rclone rclone 1.74.3
  • rclone Ubuntu 22.04 LTS 1.53.3-4ubuntu1.22.04.5
  • rclone Ubuntu 24.04 LTS 1.60.1+dfsg-3ubuntu0.24.04.6
  • rclone Ubuntu 26.04 LTS 1.60.1+dfsg-4ubuntu3.2

ubuntu advisories UBUNTU-CVE-2026-49980

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 SLES for SAP applications 16.0, SLES 16.0 0.0.20260827T195228-160000.1.1

suse advisories SUSE-SU-2026:23625-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260827T195228-160000.1.1
  • rclone openSUSE Leap 16.0 1.74.4-bp160.1.1
  • rclone openSUSE Tumbleweed 1.74.3-1.1

opensuse advisories openSUSE-SU-2026:21761-1openSUSE-SU-2026:21436-1openSUSE-SU-2026:10975-1

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-2026-49980 updated cvss 8.1

github.com/rclone/rclone: Rclone: Remote Code Execution via unauthenticated requests when `rcd --rc-serve` is enabled

  • Red Hat Cryostat 4 cryostat/cryostat-storage-rhel9
    not affected: component not present
  • Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel9, oadp/oadp-mustgather-rhel9, oadp/oadp-velero-restic-restore-helper-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/volsync-rhel9, rhacm2/volsync-operator-bundle
    not affected: vulnerable code not present

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
none
Automatable
yes
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 8.1 CVSS:3.1/AV:N/AC:H/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 3.1 8.1 CVSS:3.1/AV:N/AC:H/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
>=1.46.0, <1.74.3
>=1.49.0, <1.74.3
1.74.3
bitnami rclone
>=1.46.0, <1.74.3
1.74.3
go github.com/ncw/rclone
>=1.46.0
 no fix listed

Affected products

  • rclone rclone
  • Red Hat Cryostat 4
  • 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-78 Improper Neutralization of Special Elements used in an OS Command

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.