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CVE-2026-41179 critical CVSS 9.8

OS Command Injection in github.com/rclone/rclone (CVE-2026-41179)

Summary

OS command injection in github.com/rclone/rclone (CVE-2026-41179). Successful exploitation can lead to full system takeover. Exploitable via bearer_token_command. Mitigation: upgrade to 1.73.5 or later.

Original description

The description as published by the source.

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.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-41179 has been found in github.com/rclone/rclone.
Attackers can target a specific entry point like bearer_token_command over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade github.com/rclone/rclone to 1.73.5 or later.
If unsure, ask your IT team or search "github.com/rclone/rclone CVE-2026-41179" on the vendor's site.

CVE-2026-41179 (github.com/rclone/rclone) — CWE-78 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: bearer_token_command / master / bf55d5e6d37fd86164a87782191f9e1ffcaafa82
Patched: 1.73.5 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

OS command injection (CWE-78) exists in github.com/rclone/rclone. Attackers reach the vulnerable code path via bearer_token_command without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of github.com/rclone/rclone. Attack surface: bearer_token_command / master / bf55d5e6d37fd86164a87782191f9e1ffcaafa82.

🔥 Severity

Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 1.73.5.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/rclone/rclone' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'github.com/rclone/rclone' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で github.com/rclone/rclone を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade github.com/rclone/rclone to 1.73.5

    ステージング環境で 1.73.5 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

go github.com/rclone/rclone
[{"type":"SEMVER","events":[{"introduced":"1.49.0"},{"fixed":"1.73.5"}]}]
Bitnami rclone
[{"type":"SEMVER","events":[{"introduced":"1.48.0"},{"fixed":"1.73.5"}]}]
Go github.com/ncw/rclone
[{"type":"SEMVER","events":[{"introduced":"1.48.0"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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