{"id":"CVE-2026-17388","kind":"vulnerability","aliases":["CVE-2026-17388"],"related":[],"title":"IBM API Connect: broken authorization lets logged-in users read sensitive 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 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-level access rights. A remote attacker with a valid account can obtain sensitive information belonging to other objects.","severity":"high","cvss":8.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"IBM API Connect","fixed":["10.0.8.13"],"affected":">= 10.0.8.0, <= 10.0.8.12","ecosystem":"vendor"},{"name":"IBM API Connect","fixed":["12.1.1.3"],"affected":">= 12.1.0.0, <= 12.1.1.2","ecosystem":"vendor"}],"ecosystems":[],"tags":["api-gateway","authenticated","ibm-api-connect","self-hosted","vendor"],"not_affected_if":["fixed-version","version-outside-range"],"how_to_check":"Check your API Connect version. Exposed if it is 10.0.8.0 through 10.0.8.12 or 12.1.0.0 through 12.1.1.2 (self-hosted/on-prem). Fixed in 10.0.8.13 and 12.1.1.3. Any authenticated account can reach it, so check who holds accounts on the manager.","fix":"Upgrade API Connect 10.0.8.x to 10.0.8.13; upgrade 12.1.x to 12.1.1.3 (IBM Fix Central). IBM lists no workaround.","status":"open","published_at":"2026-11-07T05:18:53+00:00","first_seen_at":"2026-11-07T05:46:06+00:00","triaged_at":"2026-11-07T05:50:01+00:00","updated_at":"2026-11-07T06:07:07+00:00","category":"vendor","confidence":0.85,"triage":{"at":"2026-11-07T05:50:01Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM API Connect: broken authorization lets logged-in users read sensitive 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-level access rights. A remote attacker with a valid account can obtain sensitive information belonging to other objects.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["ibm-api-connect","api-gateway","self-hosted"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"authenticated user reads sensitive data from other objects","analyst_note":"Check the IBM security bulletin for API Connect to confirm fixed versions and any configuration conditions; the NVD entry gives only the affected ranges.","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\n- unknown for other checks; the sources do not say","plain_action":"","needs_analyst":true,"not_affected_if":["version-outside-range"],"who_is_affected":"Teams running IBM API Connect in the affected version ranges, where authenticated users reach API objects they should not. Deployments on versions outside the listed ranges are not covered by this entry. The sources do not describe further configuration conditions.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000693,"input_tokens":4226,"output_tokens":541,"severity_before":"high"},"analyst_status":"done","analyst_note":"Check the IBM security bulletin for API Connect to confirm fixed versions and any configuration conditions; the NVD entry gives only the affected ranges.","search":"'-17388':16A,19A '-2026':15A,18A '10.0.8.0':42B,75C '10.0.8.12':44B,77C '12.1.0.0':46B,79C '12.1.1.2':48B,81C 'access':55B 'account':63B 'allow':83C 'api':2A,21A,24A,27B,32B,39B,73C 'api-gateway':26B 'attack':59B,87C 'authent':29B,86C 'author':5A,98C 'belong':68B 'broken':4A,94C 'check':51B 'connect':3A,22A,25A,33B,40B,74C 'could':82C 'cve':14A,17A 'data':13A 'due':92C 'fail':49B 'gateway':28B 'host':36B 'ibm':1A,20A,23A,31B,38B,72C 'ibm-api-connect':30B 'inform':67B,91C 'let':6A 'level':54B,97C 'log':8A 'logged-in':7A 'object':53B,71B,96C 'object-level':52B,95C 'obtain':65B,89C 'read':11A 'remot':58B,85C 'right':56B 'self':35B 'self-host':34B 'sensit':12A,66B,90C 'user':10A 'valid':62B 'vendor':37B 'version':41B","nicknames":[],"mitigations":[],"who_affected":"Teams that run IBM API Connect themselves on 10.0.8.0 to 10.0.8.12 or 12.1.0.0 to 12.1.1.2. Any logged-in user could read sensitive data belonging to other objects because object-level access is not checked (CWE-639). Needs a valid account, no user interaction. Versions 10.0.8.13 / 12.1.1.3 and later can skip it.","tier":"B","verified":{"fix":{"at":"2026-11-07T06:07:07Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2011}},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["apiconnect","ibmapiconnect"],"ptokens":["api","connect","ibm"],"labels":["apigateway","authenticated","high","ibmapiconnect","selfhosted","vendor"],"campaign_type":null,"search_a":"'-17388':16A,19A '-2026':15A,18A 'api':2A,21A,24A 'author':5A 'broken':4A 'connect':3A,22A,25A 'cve':14A,17A 'data':13A 'ibm':1A,20A,23A 'let':6A 'log':8A 'logged-in':7A 'read':11A 'sensit':12A 'user':10A","search_b":"'10.0.8.0':42B '10.0.8.12':44B '12.1.0.0':46B '12.1.1.2':48B 'access':55B 'account':63B 'api':27B,32B,39B 'api-gateway':26B 'attack':59B 'authent':29B 'belong':68B 'check':51B 'connect':33B,40B 'fail':49B 'gateway':28B 'host':36B 'ibm':31B,38B 'ibm-api-connect':30B 'inform':67B 'level':54B 'object':53B,71B 'object-level':52B 'obtain':65B 'remot':58B 'right':56B 'self':35B 'self-host':34B 'sensit':66B 'valid':62B 'vendor':37B 'version':41B","search_c":"'10.0.8.0':75C '10.0.8.12':77C '12.1.0.0':79C '12.1.1.2':81C 'allow':83C 'api':73C 'attack':87C 'authent':86C 'author':98C 'broken':94C 'connect':74C 'could':82C 'due':92C 'ibm':72C 'inform':91C 'level':97C 'object':96C 'object-level':95C 'obtain':89C 'remot':85C 'sensit':90C","first_public_at":"2026-11-07T05:18:53+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17388","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17388","severity":null,"published_at":"2026-11-07T05:18:53+00:00","modified_at":"2026-11-07T05:18:53+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-2026-17388:2011","url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41","severity":null,"published_at":"2026-11-07T06:07:07+00:00","modified_at":"2026-11-07T06:07:07+00:00","first_seen_at":"2026-11-07T06:07:07+00:00","fetched_at":"2026-11-07T06:07:07+00:00","note":"Listed in both IBM bulletins (-41 for 10.0.8.13, -39 for 12.1.1.3), CVSS 8.5, CWE-639, no workaround. 10.0.8 per-CVE text read; 12.1 fix taken from bulletin summary, so only fix is marked verified. Bulletin metadata hints 10.0.8.13 in range, but NVD/OpenCVE say <=12; 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/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39"]}],"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":93149,"url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","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"}