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Public proof of conceptFix available

CVE-2026-41179

A public proof of concept exists; no exploitation attested.

  • Published2026-04-23
  • Fixed in1.73.5
  • WeaknessCWE-306 · CWE-78 · CWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to version 1.73.5, the RC endpoint `operations/fsinfo` is exposed without `AuthRequired: true` and accepts attacker-controlled `fs` input. Because `rc.GetFs(...)` supports inline backend definitions, an unauthenticated attacker can instantiate an attacker-controlled backend on demand. For the WebDAV backend, `bearer_token_command` is executed during backend initialization, making single-request unauthenticated local command execution possible on reachable RC deployments without global HTTP authentication. Version 1.73.5 patches the issue.

Timeline

dates in UTC
  1. 2026-04-2300:16CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-41179?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-41179?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Rclone
BranchAffectedFixed in
1.x≥ 1.48.0, < 1.73.51.73.5
1.x≥ 1.49.0, < 1.73.51.73.5
ncw/rclone
BranchAffectedFixed in
1.48+≥ 1.48.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Rclone to 1.73.5

Advisories and patches

Detection

read 2026-10-23 19:25 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedpssec-io/CVE-2026-41179s-vx/CVE-2026-41179
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2026-04-27
  • OpenCVESSVC decisionpoc—
  • CNACVSS 4.09.2read 2026-10-23
  • CNACVSS 3.19.8read 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-306, CWE-78, CWE-94read 2026-10-23
  • FIRST EPSSEPSS score5.3 %2026-10-22
  • PoC-in-GitHubproof of concept2read 2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
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
Published
2026-04-23
Last Modified
2026-07-15
NVD status
Modified

Frequently asked questions

What is CVE-2026-41179?

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to version 1.73.5, the RC endpoint `operations/fsinfo` is exposed without `AuthRequired: true` and accepts attacker-controlled `fs` input. Because `rc.GetFs(...)` supports inline backend definitions, an unauthenticated attacker can instantiate an attacker-controlled backend on demand. For the WebDAV backend, `bearer_token_command` is executed during backend initialization, making single-request unauthenticated local command execution possible on reachable RC deployments without global HTTP authentication. Version 1.73.5 patches the issue.

Is CVE-2026-41179 actively exploited?

A proof-of-concept exploit exists for CVE-2026-41179, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-41179?

CVE-2026-41179 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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