{"id":"CVE-2026-120447","kind":"vulnerability","aliases":["CVE-2026-120447"],"related":[],"title":"HotGo: SMS login bypass lets attackers take over accounts, including admins","description":"HotGo through 2.15.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to choose the SMS login verification code by supplying the Code field to /admin/sms/send. Attackers who know a user's mobile number can set a known code and sign in through /admin/site/mobileLogin to take over accounts, including administrators.","summary":"HotGo through version 2.15.1 accepts a Code field on its SMS send endpoint, so an attacker can choose the login code. Knowing a user's mobile number is enough to sign in as that user, including administrators.","severity":"critical","cvss":9.2,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["hotgo","other","self-hosted","sms-login"],"not_affected_if":["version-after-2.15.1"],"how_to_check":"- Check the HotGo version in use; versions through `2.15.1` are described as affected.\n- Look for the `/admin/sms/send` endpoint and whether it accepts a `Code` field from requests.","fix":"- Patch available per the linked GitHub reference; the fixed version is unknown from the sources.","status":"open","published_at":"2026-11-02T15:17:27+00:00","first_seen_at":"2026-11-02T15:24:02+00:00","triaged_at":"2026-11-02T15:25:44+00:00","updated_at":"2026-11-02T15:25:44+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-02T15:25:44Z","model":"claude-haiku-5-5","output":{"fix":"- Patch available per the linked GitHub reference; the fixed version is unknown from the sources.","reach":"internet","title":"HotGo: SMS login bypass lets attackers take over accounts, including admins","impact":"high","summary":"HotGo through version 2.15.1 accepts a Code field on its SMS send endpoint, so an attacker can choose the login code. Knowing a user's mobile number is enough to sign in as that user, including administrators.","audience":"businesses","category":"other","nicknames":[],"who_cares":["hotgo","self-hosted","sms-login"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker logs in as any user, including administrators, and takes over accounts","analyst_note":"Confirm the fixed HotGo version and whether SMS login is enabled by default, via the linked GitHub patch and VulnCheck advisory.","how_to_check":"- Check the HotGo version in use; versions through `2.15.1` are described as affected.\n- Look for the `/admin/sms/send` endpoint and whether it accepts a `Code` field from requests.\n- unknown for any further check: the sources do not give more.","plain_action":"","needs_analyst":true,"not_affected_if":["version-after-2.15.1"],"who_is_affected":"HotGo deployments at version 2.15.1 or earlier that expose the admin SMS login path to the internet. The sources describe no requirement beyond knowing a user's mobile number, so any reachable instance with SMS login is exposed. Instances that do not run HotGo can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000708,"input_tokens":4178,"output_tokens":580,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-120447':14A,17A '-2026':13A,16A '/admin/site/mobilelogin':106C '/admin/sms/send':88C '2.15.1':29B,65C 'accept':30B 'account':9A,110C 'admin':11A 'administr':62B,112C 'allow':72C 'attack':6A,41B,74C,89C 'authent':68C 'bypass':4A,69C 'choos':43B,76C 'code':32B,46B,81C,85C,101C 'contain':66C 'cve':12A,15A 'endpoint':38B 'enough':54B 'field':33B,86C 'host':22B 'hotgo':1A,18B,26B,63C 'includ':10A,61B,111C 'know':47B,91C 'known':100C 'let':5A 'login':3A,25B,45B,79C 'mobil':51B,95C 'number':52B,96C 'self':21B 'self-host':20B 'send':37B 'set':98C 'sign':56B,103C 'sms':2A,24B,36B,78C 'sms-login':23B 'suppli':83C 'take':7A,108C 'unauthent':73C 'user':49B,60B,93C 'verif':80C 'version':28B 'vulner':70C","nicknames":[],"mitigations":[],"who_affected":"HotGo deployments at version 2.15.1 or earlier that expose the admin SMS login path to the internet. The sources describe no requirement beyond knowing a user's mobile number, so any reachable instance with SMS login is exposed. Instances that do not run HotGo can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["critical","hotgo","other","selfhosted","smslogin"],"first_public_at":"2026-11-02T15:17:27+00:00","kev":null,"cvss_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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-120447","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120447","severity":null,"published_at":"2026-11-02T15:17:27+00:00","modified_at":"2026-11-02T15:17:27+00:00","first_seen_at":"2026-11-02T15:24:02+00:00","fetched_at":"2026-11-02T15:24:02+00:00","note":null}],"documents":[{"id":52483,"url":"https://github.com/bufanyun/hotgo/commit/cb57056c746650e6ff86dec1e97d404b63dcfd30","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":52484,"url":"https://www.vulncheck.com/advisories/hotgo-through-2.15.1-authentication-bypass-via-client-set-sms-verification-code","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"}