{"id":"CVE-2026-54377","kind":"vulnerability","aliases":["CVE-2026-54377"],"related":[],"title":"VitaFit cloud API lets logged-in users read other accounts' health data","description":"VitaFit cloud API before 2026-10-30 contained an insecure direct object reference vulnerability that allows authenticated attackers to access another user's data by supplying a different user_id or profile_id to endpoints such as GET /front/profile/{profile_id}/report/ and GET /front/profile/{profile_id}/body_index_per_day/. Attackers can leverage predictable user_id and profile_id relationships combined with an account-enumeration weakness to read another account's email address, profile, body-composition report, and measurement history at scale.","summary":"The VitaFit cloud API accepts a different user_id or profile_id in requests, so an authenticated user can read another account's email, profile, body-composition report and measurement history. Predictable IDs and an account-enumeration weakness make this possible at scale.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["health-data","idor","vendor","vitafit"],"not_affected_if":["auth-required"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-04T22:18:05+00:00","first_seen_at":"2026-11-04T23:08:48+00:00","triaged_at":"2026-11-04T23:09:55+00:00","updated_at":"2026-11-04T23:09:55+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-11-04T23:09:55Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"VitaFit cloud API lets logged-in users read other accounts' health data","impact":"high","summary":"The VitaFit cloud API accepts a different user_id or profile_id in requests, so an authenticated user can read another account's email, profile, body-composition report and measurement history. Predictable IDs and an account-enumeration weakness make this possible at scale.","audience":"everyone","category":"vendor","nicknames":[],"who_cares":["vitafit","health-data","idor"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker reads other users' emails, profiles and body-composition records at scale","analyst_note":"Confirm the fixed version or vendor notice for the VitaFit cloud API before 2026-10-30 and whether the product's own notice exists; check the VulnCheck advisory.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":["auth-required"],"who_is_affected":"unknown","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000632,"input_tokens":4322,"output_tokens":400,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-10':76C '-2026':15A,18A '-30':77C '-54377':16A,19A '/body_index_per_day':118C '/front/profile':109C,115C '/report':112C '2026':75C 'accept':30B 'access':90C 'account':11A,47B,63B,133C,139C 'account-enumer':62B,132C 'address':142C 'allow':86C 'anoth':46B,91C,138C 'api':3A,29B,73C 'attack':88C,119C 'authent':42B,87C 'bodi':52B,145C 'body-composit':51B,144C 'cloud':2A,28B,72C 'combin':129C 'composit':53B,146C 'contain':78C 'cve':14A,17A 'data':13A,22B,94C 'differ':32B,98C 'direct':81C 'email':49B,141C 'endpoint':105C 'enumer':64B,134C 'get':108C,114C 'health':12A,21B 'health-data':20B 'histori':57B,150C 'id':34B,37B,59B,100C,103C,111C,117C,124C,127C 'idor':23B 'insecur':80C 'let':4A 'leverag':121C 'log':6A 'logged-in':5A 'make':66B 'measur':56B,149C 'object':82C 'possibl':68B 'predict':58B,122C 'profil':36B,50B,102C,110C,116C,126C,143C 'read':9A,45B,137C 'refer':83C 'relationship':128C 'report':54B,147C 'request':39B 'scale':70B,152C 'suppli':96C 'user':8A,33B,43B,92C,99C,123C 'vendor':24B 'vitafit':1A,25B,27B,71C 'vulner':84C 'weak':65B,135C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["healthdata","idor","medium","vendor","vitafit"],"campaign_type":null,"first_public_at":"2026-11-04T22:18:05+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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-2026-54377","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54377","severity":null,"published_at":"2026-11-04T22:18:05+00:00","modified_at":"2026-11-04T22:18:05+00:00","first_seen_at":"2026-11-04T23:08:48+00:00","fetched_at":"2026-11-04T23:08:48+00:00","note":null}],"documents":[{"id":71158,"url":"https://www.vulncheck.com/advisories/vitafit-cloud-api-idor-via-profile-id-endpoints","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"}],"exploit_sources":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}