{"id":"CVE-2026-77880","kind":"vulnerability","aliases":["CVE-2026-77880"],"related":[],"title":"Control Web Panel: password change route lets attackers run root commands","description":"Control Web Panel (CWP) before webpanel_version 1.16 contains an OS command injection vulnerability in the loopback API password change route /newpass/, which runs as root. An attacker can inject arbitrary OS commands by manipulating the POST 'user' parameter that is passed unescaped into a shell command, achieving remote code execution with root privileges.","summary":"Control Web Panel (CWP), a web hosting control panel, passes the POST 'user' parameter of its loopback password change route /newpass/ unescaped into a shell command. An attacker who can reach that route can run arbitrary operating system commands as root.","severity":"high","cvss":8.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["control-web-panel","hosting","infrastructure","linux","self-hosted"],"not_affected_if":["cwp-not-installed","webpanel-1.16-or-later"],"how_to_check":"- Check the installed CWP version: `webpanel_version` below `1.16` means it is affected\n- Confirm whether the /newpass/ route is reachable from outside the server (unknown whether a source confirms the exact exposure path)","fix":"- Move CWP to `webpanel_version` 1.16 or later","status":"open","published_at":"2026-11-02T16:17:43+00:00","first_seen_at":"2026-11-02T16:24:05+00:00","triaged_at":"2026-11-02T16:26:18+00:00","updated_at":"2026-11-02T16:26:18+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-02T16:26:18Z","model":"claude-haiku-5-5","output":{"fix":"- Move CWP to `webpanel_version` 1.16 or later","reach":"unknown","title":"Control Web Panel: password change route lets attackers run root commands","impact":"high","summary":"Control Web Panel (CWP), a web hosting control panel, passes the POST 'user' parameter of its loopback password change route /newpass/ unescaped into a shell command. An attacker who can reach that route can run arbitrary operating system commands as root.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["control-web-panel","self-hosted","linux","hosting"],"confidence":0.6,"fix_status":"available","needs_auth":"unknown","worst_case":"Attacker runs arbitrary commands as root on the server","analyst_note":"Confirm whether the loopback /newpass/ route can be reached remotely and whether authentication is required; read the VulnCheck advisory at www.vulncheck.com.","how_to_check":"- Check the installed CWP version: `webpanel_version` below `1.16` means it is affected\n- Confirm whether the /newpass/ route is reachable from outside the server (unknown whether a source confirms the exact exposure path)","plain_action":"","needs_analyst":true,"not_affected_if":["cwp-not-installed","webpanel-1.16-or-later"],"who_is_affected":"Servers running Control Web Panel before webpanel_version 1.16 are exposed. The flaw sits in a loopback-only API route, so the sources describe it as reachable from the local machine; whether a remote attacker can reach it through a proxy or other path is unknown. Teams not running CWP can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000717,"input_tokens":4168,"output_tokens":601,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-77880':14A,17A '/newpass':48B,90C '1.16':76C 'achiev':116C 'api':86C 'arbitrari':63B,99C 'attack':8A,55B,96C 'chang':5A,46B,88C 'code':118C 'command':11A,53B,66B,80C,101C,115C 'contain':77C 'control':1A,19B,28B,35B,69C 'control-web-panel':18B 'cve':12A,15A 'cwp':31B,72C 'execut':119C 'host':22B,27B,34B 'infrastructur':23B 'inject':81C,98C 'let':7A 'linux':24B 'loopback':44B,85C 'manipul':103C 'oper':64B 'os':79C,100C 'panel':3A,21B,30B,36B,71C 'paramet':41B,107C 'pass':37B,110C 'password':4A,45B,87C 'post':39B,105C 'privileg':122C 'reach':58B 'remot':117C 'root':10A,68B,94C,121C 'rout':6A,47B,60B,89C 'run':9A,62B,92C 'self':26B 'self-host':25B 'shell':52B,114C 'system':65B 'unescap':49B,111C 'user':40B,106C 'version':75C 'vulner':82C 'web':2A,20B,29B,33B,70C 'webpanel':74C","nicknames":[],"mitigations":[],"who_affected":"Servers running Control Web Panel before webpanel_version 1.16 are exposed. The flaw sits in a loopback-only API route, so the sources describe it as reachable from the local machine; whether a remote attacker can reach it through a proxy or other path is unknown. Teams not running CWP can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["controlwebpanel","high","hosting","infrastructure","linux","selfhosted"],"first_public_at":"2026-11-02T16:17:43+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-77880","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77880","severity":null,"published_at":"2026-11-02T16:17:43+00:00","modified_at":"2026-11-02T16:17:43+00:00","first_seen_at":"2026-11-02T16:24:05+00:00","fetched_at":"2026-11-02T16:24:05+00:00","note":null}],"documents":[{"id":52775,"url":"https://www.vulncheck.com/advisories/control-web-panel-cwp-os-command-injection-via-newpass","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}