{"id":"CVE-2026-17341","kind":"vulnerability","aliases":["CVE-2026-17341"],"related":[],"title":"IBM API Connect: server-side request forgery lets attackers relay unauthorized email","description":"IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to perform server-side request forgery and relay unauthorized email messages due to improper neutralization of user-supplied input.","summary":"IBM API Connect versions 12.1.0.0 through 12.1.1.2 fail to neutralize user-supplied input properly. A remote attacker can make the server send requests to other systems and relay unauthorized email messages.","severity":"high","cvss":7.2,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"API Connect V12 OnPrem","fixed":["12.1.1.3"],"affected":">= 12.1.0.0, <= 12.1.1.2","ecosystem":"vendor"}],"ecosystems":[],"tags":["api-gateway","ibm-api-connect","infrastructure","self-hosted"],"not_affected_if":["unknown"],"how_to_check":"Check your API Connect V12 OnPrem version; versions v12.1.0.0 through v12.1.1.2 are affected. v12.1.1.3 is the fixed version. IBM lists no workaround or mitigation.","fix":"Upgrade IBM API Connect V12 OnPrem to v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205)","status":"open","published_at":"2026-11-07T05:18:45+00:00","first_seen_at":"2026-11-07T05:46:04+00:00","triaged_at":"2026-11-07T05:52:15+00:00","updated_at":"2026-11-07T06:15:16+00:00","category":"infrastructure","confidence":0.85,"triage":{"at":"2026-11-07T05:52:15Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"IBM API Connect: server-side request forgery lets attackers relay unauthorized email","impact":"medium","summary":"IBM API Connect versions 12.1.0.0 through 12.1.1.2 fail to neutralize user-supplied input properly. A remote attacker can make the server send requests to other systems and relay unauthorized email messages.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["ibm-api-connect","api-gateway","self-hosted"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker relays unauthorized email and reaches internal systems via SSRF","analyst_note":"Find IBM's security bulletin for CVE-2026-17341 to confirm the fixed version and any required setting.","how_to_check":"- Check the installed API Connect version against the affected range `12.1.0.0` through `12.1.1.2`\n- Confirm whether the affected version is in use with `unknown` product build data from the sources","plain_action":"","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Organizations running IBM API Connect 12.1.0.0 through 12.1.1.2 are in scope. The sources do not describe which deployment paths or configurations are exposed, so unknown.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000674,"input_tokens":4206,"output_tokens":506,"severity_before":"high"},"analyst_status":"done","analyst_note":"Find IBM's security bulletin for CVE-2026-17341 to confirm the fixed version and any required setting.","search":"'-17341':16A,19A '-2026':15A,18A '12.1.0.0':39B,70C '12.1.1.2':41B,72C 'allow':74C 'api':2A,20A,25B,29B,36B,68C 'api-gateway':24B 'attack':10A,52B,77C 'connect':3A,21A,30B,37B,69C 'could':73C 'cve':14A,17A 'due':90C 'email':13A,65B,88C 'fail':42B 'forgeri':8A,84C 'gateway':26B 'host':34B 'ibm':1A,28B,35B,67C 'ibm-api-connect':27B 'improp':92C 'infrastructur':31B 'input':48B,98C 'let':9A 'make':54B 'messag':66B,89C 'neutral':44B,93C 'onprem':23A 'perform':79C 'proper':49B 'relay':11A,63B,86C 'remot':51B,76C 'request':7A,58B,83C 'self':33B 'self-host':32B 'send':57B 'server':5A,56B,81C 'server-sid':4A,80C 'side':6A,82C 'suppli':47B,97C 'system':61B 'unauthor':12A,64B,87C 'user':46B,96C 'user-suppli':45B,95C 'v12':22A 'version':38B","nicknames":[],"mitigations":[],"who_affected":"Teams running self-hosted IBM API Connect V12 OnPrem v12.1.0.0 through v12.1.1.2 are affected. IBM describes an unauthenticated remote attacker abusing user-supplied input to make the server send requests and relay unauthorized email. The bulletin names no required setting. IBM lists no workaround. Anyone on v12.1.1.3 or later can skip it.","tier":"B","verified":{"fix":{"at":"2026-11-07T06:15:16Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2033},"products":{"at":"2026-11-07T06:15:16Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2033},"mitigations":{"at":"2026-11-07T06:15:16Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2033},"how_to_check":{"at":"2026-11-07T06:15:16Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2033},"who_affected":{"at":"2026-11-07T06:15:16Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2033}},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["apiconnectv12onprem","connectv12onprem"],"ptokens":["api","connect","onprem","v12"],"labels":["apigateway","high","ibmapiconnect","infrastructure","selfhosted"],"campaign_type":null,"search_a":"'-17341':16A,19A '-2026':15A,18A 'api':2A,20A 'attack':10A 'connect':3A,21A 'cve':14A,17A 'email':13A 'forgeri':8A 'ibm':1A 'let':9A 'onprem':23A 'relay':11A 'request':7A 'server':5A 'server-sid':4A 'side':6A 'unauthor':12A 'v12':22A","search_b":"'12.1.0.0':39B '12.1.1.2':41B 'api':25B,29B,36B 'api-gateway':24B 'attack':52B 'connect':30B,37B 'email':65B 'fail':42B 'gateway':26B 'host':34B 'ibm':28B,35B 'ibm-api-connect':27B 'infrastructur':31B 'input':48B 'make':54B 'messag':66B 'neutral':44B 'proper':49B 'relay':63B 'remot':51B 'request':58B 'self':33B 'self-host':32B 'send':57B 'server':56B 'suppli':47B 'system':61B 'unauthor':64B 'user':46B 'user-suppli':45B 'version':38B","search_c":"'12.1.0.0':70C '12.1.1.2':72C 'allow':74C 'api':68C 'attack':77C 'connect':69C 'could':73C 'due':90C 'email':88C 'forgeri':84C 'ibm':67C 'improp':92C 'input':98C 'messag':89C 'neutral':93C 'perform':79C 'relay':86C 'remot':76C 'request':83C 'server':81C 'server-sid':80C 'side':82C 'suppli':97C 'unauthor':87C 'user':96C 'user-suppli':95C","first_public_at":"2026-11-07T05:18:45+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17341","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17341","severity":null,"published_at":"2026-11-07T05:18:45+00:00","modified_at":"2026-11-07T05:18:45+00:00","first_seen_at":"2026-11-07T05:46:04+00:00","fetched_at":"2026-11-07T05:46:04+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-17341:2033","url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","severity":null,"published_at":"2026-11-07T06:15:16+00:00","modified_at":"2026-11-07T06:15:16+00:00","first_seen_at":"2026-11-07T06:15:16+00:00","fetched_at":"2026-11-07T06:15:16+00:00","note":"IBM bulletin (-39, 2026-11-05) lists CVE-2026-17341 (CWE-918, CVSS 7.2, PR:N) fixed in v12.1.1.3; affected V12 OnPrem v12.1.0.0-v12.1.1.2; workarounds: None. Bulletin is multi-CVE; no per-CVE config detail. X not checked.","cites":["https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39"]}],"documents":[{"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"}