{"id":"CVE-2026-17383","kind":"vulnerability","aliases":["CVE-2026-17383"],"related":[],"title":"IBM API Connect: authenticated users can read other tenants' data","description":"IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to obtain sensitive information from other tenants due to broken object-level authorization.","summary":"IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 fail to check object ownership, so a logged-in user can reach objects belonging to other tenants. An attacker with a valid account can obtain sensitive information from those other tenants.","severity":"high","cvss":7.7,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"IBM API Connect","fixed":["10.0.8.13","12.1.1.3"],"affected":">= 10.0.8.0, <= 10.0.8.12; >= 12.1.0.0, <= 12.1.1.2","ecosystem":"vendor"}],"ecosystems":[],"tags":["api-gateway","ibm-api-connect","multi-tenant","self-hosted","vendor"],"not_affected_if":["auth-required","single-tenant","unaffected-version"],"how_to_check":"Check the installed API Connect version: affected are 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2. Only matters if the platform hosts more than one tenant/provider organization and untrusted users hold valid accounts.","fix":"Upgrade to IBM API Connect 10.0.8.13 (10.0.8 line) or 12.1.1.3 (12.1 line), per IBM's security bulletins.","status":"open","published_at":"2026-11-07T05:18:52+00:00","first_seen_at":"2026-11-07T05:46:06+00:00","triaged_at":"2026-11-07T05:50:35+00:00","updated_at":"2026-11-07T06:08:51+00:00","category":"vendor","confidence":0.7,"triage":{"at":"2026-11-07T05:50:35Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM API Connect: authenticated users can read other tenants' data","impact":"medium","summary":"IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 fail to check object ownership, so a logged-in user can reach objects belonging to other tenants. An attacker with a valid account can obtain sensitive information from those other tenants.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["ibm-api-connect","multi-tenant","api-gateway"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Authenticated attacker reads sensitive data belonging to other tenants.","analyst_note":"Fixed version and vendor advisory are not in the sources; check IBM's security bulletin for CVE-2026-17383 for the fix and the exact data exposed.","how_to_check":"- Check the installed API Connect version against the affected ranges 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 in the product console or deployment manifest.\n- Confirm whether the deployment is multi-tenant, since cross-tenant access needs more than one tenant on the platform.","plain_action":"","needs_analyst":true,"not_affected_if":["unaffected-version","single-tenant"],"who_is_affected":"Organisations running IBM API Connect in the affected version ranges, particularly multi-tenant deployments where several teams or customers share one instance. Single-tenant deployments on unaffected versions can skip it. The sources do not state a fixed version.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000729,"input_tokens":4231,"output_tokens":612,"severity_before":"high"},"analyst_status":"done","analyst_note":"Fixed version and vendor advisory are not in the sources; check IBM's security bulletin for CVE-2026-17383 for the fix and the exact data exposed.","search":"'-17383':13A,16A '-2026':12A,15A '10.0.8.0':38B,80C '10.0.8.12':40B,82C '12.1.0.0':42B,84C '12.1.1.2':44B,86C 'account':68B 'allow':88C 'api':2A,18A,21B,25B,35B,78C 'api-gateway':20B 'attack':64B,92C 'authent':4A,91C 'author':106C 'belong':59B 'broken':102C 'check':47B 'connect':3A,19A,26B,36B,79C 'could':87C 'cve':11A,14A 'data':10A 'due':100C 'fail':45B 'gateway':22B 'host':32B 'ibm':1A,17A,24B,34B,77C 'ibm-api-connect':23B 'inform':72B,96C 'level':105C 'log':53B 'logged-in':52B 'multi':28B 'multi-ten':27B 'object':48B,58B,104C 'object-level':103C 'obtain':70B,94C 'ownership':49B 'reach':57B 'read':7A 'remot':90C 'self':31B 'self-host':30B 'sensit':71B,95C 'tenant':9A,29B,62B,76B,99C 'user':5A,55B 'valid':67B 'vendor':33B 'version':37B","nicknames":[],"mitigations":[],"who_affected":"Teams running IBM API Connect 10.0.8.0 to 10.0.8.12 or 12.1.0.0 to 12.1.1.2 with several tenants or provider organizations. Any logged-in user can read sensitive information belonging to other tenants because object ownership is not checked (broken object-level authorization). Single-tenant installs where every account is trusted have little exposure.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["apiconnect","ibmapiconnect"],"ptokens":["api","connect","ibm"],"labels":["apigateway","high","ibmapiconnect","multitenant","selfhosted","vendor"],"campaign_type":null,"search_a":"'-17383':13A,16A '-2026':12A,15A 'api':2A,18A 'authent':4A 'connect':3A,19A 'cve':11A,14A 'data':10A 'ibm':1A,17A 'read':7A 'tenant':9A 'user':5A","search_b":"'10.0.8.0':38B '10.0.8.12':40B '12.1.0.0':42B '12.1.1.2':44B 'account':68B 'api':21B,25B,35B 'api-gateway':20B 'attack':64B 'belong':59B 'check':47B 'connect':26B,36B 'fail':45B 'gateway':22B 'host':32B 'ibm':24B,34B 'ibm-api-connect':23B 'inform':72B 'log':53B 'logged-in':52B 'multi':28B 'multi-ten':27B 'object':48B,58B 'obtain':70B 'ownership':49B 'reach':57B 'self':31B 'self-host':30B 'sensit':71B 'tenant':29B,62B,76B 'user':55B 'valid':67B 'vendor':33B 'version':37B","search_c":"'10.0.8.0':80C '10.0.8.12':82C '12.1.0.0':84C '12.1.1.2':86C 'allow':88C 'api':78C 'attack':92C 'authent':91C 'author':106C 'broken':102C 'connect':79C 'could':87C 'due':100C 'ibm':77C 'inform':96C 'level':105C 'object':104C 'object-level':103C 'obtain':94C 'remot':90C 'sensit':95C 'tenant':99C","first_public_at":"2026-11-07T05:18:52+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17383","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17383","severity":null,"published_at":"2026-11-07T05:18:52+00:00","modified_at":"2026-11-07T05:18:52+00:00","first_seen_at":"2026-11-07T05:46:06+00:00","fetched_at":"2026-11-07T05:46:06+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-17383:2014","url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41","severity":null,"published_at":"2026-11-07T06:08:51+00:00","modified_at":"2026-11-07T06:08:51+00:00","first_seen_at":"2026-11-07T06:08:51+00:00","fetched_at":"2026-11-07T06:08:51+00:00","note":"IBM bulletins (10.0.8.13 and v12.1.1.3 pages) linked as advisory; fetched text was truncated before CVE-2026-17383, so listing not directly seen and nothing marked verified. Fix per IBM wording quoted by aggregator: 10.0.8.13 / 12.1.1.3. No exploitation or PoC found.","cites":["https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41","https://www.ibm.com/support/pages/node/7295635"]}],"documents":[{"id":93150,"url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41","title":"IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (10.0.8.13)","kind":"advisory","source":"analyst","publisher":null,"text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null},{"id":92834,"url":"https://www.ibm.com/support/pages/node/7295635","title":"IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (v12.1.1.3)","kind":"advisory","source":"analyst","publisher":null,"text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}