{"id":"CVE-2026-103906","kind":"vulnerability","aliases":["CVE-2026-103906"],"related":[],"title":"AM CLUB mobile app: hard-coded MQTT credentials expose other tenants' data","description":"Use of hard-coded MQTT credentials in the AM CLUB mobile application allows an authenticated attacker to connect to the MQTT broker and access data or perform actions across tenant boundaries.","summary":"The AM CLUB mobile application ships with hard-coded MQTT broker credentials. An authenticated attacker can use them to connect to the broker and read data or act across tenant boundaries.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"AM CLUB","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["am-club","mobile","mqtt","multi-tenant","other"],"not_affected_if":["unknown"],"how_to_check":"unknown: no source names affected app versions or how to identify the build. If you use AM CLUB, ask the vendor which app and broker versions are affected.","fix":"unknown: no vendor patch or broker credential rotation found yet","status":"open","published_at":"2026-11-09T17:17:06+00:00","first_seen_at":"2026-11-09T17:27:37+00:00","triaged_at":"2026-11-09T17:28:48+00:00","updated_at":"2026-11-09T17:29:13+00:00","category":"other","confidence":0.3,"triage":{"at":"2026-11-09T17:28:48Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"AM CLUB mobile app: hard-coded MQTT credentials expose other tenants' data","impact":"medium","summary":"The AM CLUB mobile application ships with hard-coded MQTT broker credentials. An authenticated attacker can use them to connect to the broker and read data or act across tenant boundaries.","audience":"businesses","category":"other","nicknames":[],"who_cares":["am-club","mqtt","mobile","multi-tenant"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker reads or changes other tenants' MQTT data across tenant boundaries","analyst_note":"Find the affected AM CLUB app versions, the fixed version, and whether the vendor has issued a patch or broker credential rotation, via the NVD entry and vendor advisory.","how_to_check":"unknown","plain_action":"","product_name":"AM CLUB","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Organizations that run or rely on the AM CLUB mobile application and its MQTT broker. The sources do not name affected versions or the broker's hosting setup, so whether a given deployment is exposed is unknown.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000694,"input_tokens":4522,"output_tokens":484,"severity_before":"high"},"analyst_status":"done","analyst_note":"Find the affected AM CLUB app versions, the fixed version, and whether the vendor has issued a patch or broker credential rotation, via the NVD entry and vendor advisory.","search":"'-103906':16A,19A '-2026':15A,18A 'access':86C 'across':59B,91C 'act':58B 'action':90C 'allow':75C 'am':20A 'am-club':22B 'app':4A 'applic':34B,74C 'attack':45B,78C 'authent':44B,77C 'boundari':61B,93C 'broker':41B,53B,84C 'club':2A,21A,24B,32B,72C 'code':7A,39B,66C 'connect':50B,80C 'credenti':9A,42B,68C 'cve':14A,17A 'data':13A,56B,87C 'expos':10A 'hard':6A,38B,65C 'hard-cod':5A,37B,64C 'mobil':3A,25B,33B,73C 'mqtt':8A,26B,40B,67C,83C 'multi':28B 'multi-ten':27B 'perform':89C 'read':55B 'ship':35B 'tenant':12A,29B,60B,92C 'use':47B,62C","nicknames":[],"mitigations":[],"who_affected":"Organizations that run or rely on the AM CLUB mobile application and its MQTT broker. The sources do not name affected versions or the broker's hosting setup, so whether a given deployment is exposed is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["amclub","club"],"ptokens":["am","club"],"labels":["amclub","high","mobile","mqtt","multitenant","other","vendor"],"campaign_type":null,"search_a":"'-103906':16A,19A '-2026':15A,18A 'am':20A 'app':4A 'club':2A,21A 'code':7A 'credenti':9A 'cve':14A,17A 'data':13A 'expos':10A 'hard':6A 'hard-cod':5A 'mobil':3A 'mqtt':8A 'tenant':12A","search_b":"'across':59B 'act':58B 'am-club':22B 'applic':34B 'attack':45B 'authent':44B 'boundari':61B 'broker':41B,53B 'club':24B,32B 'code':39B 'connect':50B 'credenti':42B 'data':56B 'hard':38B 'hard-cod':37B 'mobil':25B,33B 'mqtt':26B,40B 'multi':28B 'multi-ten':27B 'read':55B 'ship':35B 'tenant':29B,60B 'use':47B","search_c":"'access':86C 'across':91C 'action':90C 'allow':75C 'applic':74C 'attack':78C 'authent':77C 'boundari':93C 'broker':84C 'club':72C 'code':66C 'connect':80C 'credenti':68C 'data':87C 'hard':65C 'hard-cod':64C 'mobil':73C 'mqtt':67C,83C 'perform':89C 'tenant':92C 'use':62C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-09T17:17:06+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/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":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-103906","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103906","severity":null,"published_at":"2026-11-09T17:17:06+00:00","modified_at":"2026-11-09T17:17:06+00:00","first_seen_at":"2026-11-09T17:27:37+00:00","fetched_at":"2026-11-09T17:27:37+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-103906:2304","url":null,"severity":null,"published_at":"2026-11-09T17:29:13+00:00","modified_at":"2026-11-09T17:29:13+00:00","first_seen_at":"2026-11-09T17:29:13+00:00","fetched_at":"2026-11-09T17:29:13+00:00","note":"Could not reach primary sources: web-cli (Exa) out of credits (402), NVD page via WebFetch returned no CVE content. No vendor advisory, affected versions, fixed version, or credential rotation found. Nothing verified; fix_status left as is. Revisit once web-cli works: search the NVD references for the vendor advisory."}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}