{"id":"CVE-2026-17143","kind":"vulnerability","aliases":["CVE-2026-17143"],"related":[],"title":"IBM API Connect: authenticated users can inject HTML into pages","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 perform HTML injection due to improper neutralization of user-supplied input.","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 neutralize user-supplied input, enabling HTML injection. A remote attacker with a valid account can insert markup that is rendered to other users.","severity":"medium","cvss":4.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["api-gateway","ibm-api-connect","vendor"],"not_affected_if":["unaffected-version"],"how_to_check":"- Check the installed API Connect version against `10.0.8.0` through `10.0.8.12` and `12.1.0.0` through `12.1.1.2`","fix":null,"status":"open","published_at":"2026-11-07T05:18:27+00:00","first_seen_at":"2026-11-07T05:45:59+00:00","triaged_at":"2026-11-07T05:54:29+00:00","updated_at":"2026-11-07T05:54:29+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-11-07T05:54:29Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM API Connect: authenticated users can inject HTML into pages","impact":"low","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 neutralize user-supplied input, enabling HTML injection. A remote attacker with a valid account can insert markup that is rendered to other users.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["ibm-api-connect","api-gateway"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker injects HTML into pages viewed by other users","analyst_note":"Confirm the vulnerable input fields and the fixed version for each affected branch from IBM's advisory.","how_to_check":"- Check the installed API Connect version against `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":["unaffected-version"],"who_is_affected":"Organizations running IBM API Connect in the affected version ranges, where users with accounts can submit input that is displayed back to others. Installations outside those version ranges are not listed as affected. The sources do not describe the specific input fields or whether they are exposed beyond authenticated users.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000692,"input_tokens":4231,"output_tokens":537,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-17143':13A,16A '-2026':12A,15A '10.0.8.0':29B,65C '10.0.8.12':31B,67C '12.1.0.0':33B,69C '12.1.1.2':35B,71C 'account':52B 'allow':73C 'api':2A,18B,22B,26B,63C 'api-gateway':17B 'attack':48B,77C 'authent':4A,76C 'connect':3A,23B,27B,64C 'could':72C 'cve':11A,14A 'due':82C 'enabl':43B 'fail':36B 'gateway':19B 'html':8A,44B,80C 'ibm':1A,21B,25B,62C 'ibm-api-connect':20B 'improp':84C 'inject':7A,45B,81C 'input':42B,90C 'insert':54B 'markup':55B 'neutral':38B,85C 'page':10A 'perform':79C 'remot':47B,75C 'render':58B 'suppli':41B,89C 'user':5A,40B,61B,88C 'user-suppli':39B,87C 'valid':51B 'vendor':24B 'version':28B","nicknames":[],"mitigations":[],"who_affected":"Organizations running IBM API Connect in the affected version ranges, where users with accounts can submit input that is displayed back to others. Installations outside those version ranges are not listed as affected. The sources do not describe the specific input fields or whether they are exposed beyond authenticated users.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["apigateway","ibmapiconnect","medium","vendor"],"campaign_type":null,"search_a":"'-17143':13A,16A '-2026':12A,15A 'api':2A 'authent':4A 'connect':3A 'cve':11A,14A 'html':8A 'ibm':1A 'inject':7A 'page':10A 'user':5A","search_b":"'10.0.8.0':29B '10.0.8.12':31B '12.1.0.0':33B '12.1.1.2':35B 'account':52B 'api':18B,22B,26B 'api-gateway':17B 'attack':48B 'connect':23B,27B 'enabl':43B 'fail':36B 'gateway':19B 'html':44B 'ibm':21B,25B 'ibm-api-connect':20B 'inject':45B 'input':42B 'insert':54B 'markup':55B 'neutral':38B 'remot':47B 'render':58B 'suppli':41B 'user':40B,61B 'user-suppli':39B 'valid':51B 'vendor':24B 'version':28B","search_c":"'10.0.8.0':65C '10.0.8.12':67C '12.1.0.0':69C '12.1.1.2':71C 'allow':73C 'api':63C 'attack':77C 'authent':76C 'connect':64C 'could':72C 'due':82C 'html':80C 'ibm':62C 'improp':84C 'inject':81C 'input':90C 'neutral':85C 'perform':79C 'remot':75C 'suppli':89C 'user':88C 'user-suppli':87C","first_public_at":"2026-11-07T05:18:27+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17143","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17143","severity":null,"published_at":"2026-11-07T05:18:27+00:00","modified_at":"2026-11-07T05:18:27+00:00","first_seen_at":"2026-11-07T05:45:59+00:00","fetched_at":"2026-11-07T05:45:59+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}