{"id":"CVE-2026-71284","published":"2026-08-05T13:24:53.093","lastModified":"2026-08-10T12:17:31.020","description":"Fledge's backup-restore upload handler, upload_backup (python/fledge/services/core/api/backup_restore.py), takes the first extracted tar member's filename (tar_file_names[0]) and builds a shell command via string formatting. Because os.system invokes a shell and no quoting (shlex.quote, list-form subprocess) is applied, an admin uploading a crafted backup archive achieves arbitrary OS command execution.","cvssScore":7.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-78"],"vendors":[],"products":[],"references":[{"url":"https://github.com/fledge-iot/fledge","tags":[]},{"url":"https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py","tags":[]}],"exploitRefs":[{"url":"https://github.com/fledge-iot/fledge","tags":[]},{"url":"https://github.com/fledge-iot/fledge/blob/main/python/fledge/services/core/api/backup_restore.py","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows an admin to execute arbitrary OS commands by crafting a backup archive, leading to Remote Code Execution (RCE).","exploitability":"Exploitation requires administrative access and a crafted backup archive; moderate effort needed.","blast_radius":"If exploited, the impact could be severe, potentially compromising the entire system.","remediation":"Update Fledge to a version that properly handles file uploads and command execution.","tags":["rce","os-command-injection","backup"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T07:03:09.934Z"}}