{"id":"CVE-2026-17319","kind":"vulnerability","aliases":["CVE-2026-17319"],"related":[],"title":"IBM API Connect V12 OnPrem 12.1.0.0–12.1.1.2: authenticated user can change tool settings and cause denial of service; fixed in 12.1.1.3","description":"IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to modify tool configuration and cause a denial of service due to improper authorization. Information supplied by the client is relied on when deciding what a user is allowed to do, which could allow unauthorized changes that disrupt service.","summary":"IBM says API Connect could let a remote authenticated attacker modify tool configuration and cause a denial of service, because client-supplied information is relied on when deciding what a user may do (CWE-862, CVSS 7.1, vector AV:A/AC:H/PR:L, adjacent network). Affects API Connect V12 OnPrem v12.1.0.0-v12.1.1.2; fixed in v12.1.1.3. IBM lists no workarounds. No exploitation or PoC stated.","severity":"high","cvss":7.1,"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","authenticated","ibm-api-connect","infrastructure","self-hosted"],"not_affected_if":["auth-required","outside-affected-range","version-outside-range"],"how_to_check":"Check your API Connect V12 OnPrem version. v12.1.0.0 through v12.1.1.2 is affected; v12.1.1.3 is fixed. IBM does not name the vulnerable component or role. Also check if you run other API Connect lines: IBM's bulletin lists only V12 OnPrem for this CVE.","fix":"Upgrade IBM API Connect V12 OnPrem to v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205). IBM lists no workarounds.","status":"open","published_at":"2026-11-07T05:18:41+00:00","first_seen_at":"2026-11-07T05:46:03+00:00","triaged_at":"2026-11-07T05:52:18+00:00","updated_at":"2026-11-07T06:18:36+00:00","category":"infrastructure","confidence":0.85,"triage":{"at":"2026-11-07T05:52:18Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM API Connect: authenticated users can change tool settings and disrupt service","impact":"medium","summary":"IBM API Connect 12.1.0.0 through 12.1.1.2 trusts client-supplied information when deciding what a user may do. A logged-in attacker can therefore modify tool configuration and cause a denial of service.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["ibm-api-connect","api-gateway"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"authenticated attacker changes tool configuration and disrupts service","analyst_note":"Check the IBM security bulletin for API Connect 12.1 for the fixed version and affected configuration; sources here only give NVD text.","how_to_check":"- Check the installed API Connect version against the affected range 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":"Organizations running IBM API Connect 12.1.0.0 through 12.1.1.2 where authenticated users can reach the management or tooling interfaces. The sources do not describe the specific configuration that exposes it, so teams should confirm whether their deployment matches the affected range.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000682,"input_tokens":4242,"output_tokens":516,"severity_before":"high"},"analyst_status":"done","analyst_note":"Check the IBM security bulletin for API Connect 12.1 for the fixed version and affected configuration; sources here only give NVD text.","search":"'-17319':24A,27A '-2026':23A,26A '-862':79B '12.1.0.0':6A,110C '12.1.1.2':7A,112C '12.1.1.3':21A '7.1':81B 'a/ac':84B 'adjac':87B 'affect':89B 'allow':114C,147C,152C 'api':2A,28A,33B,38B,46B,90B,108C 'api-gateway':32B 'attack':53B,118C 'authent':8A,35B,52B,117C 'author':132C 'av':83B 'caus':15A,58B,124C 'chang':11A,154C 'client':65B,137C 'client-suppli':64B 'configur':56B,122C 'connect':3A,29A,39B,47B,91B,109C 'could':48B,113C,151C 'cve':22A,25A 'cvss':80B 'cwe':78B 'decid':72B,142C 'denial':16A,60B,126C 'disrupt':156C 'due':129C 'exploit':103B 'fix':19A,95B 'gateway':34B 'h/pr':85B 'host':43B 'ibm':1A,37B,44B,98B,107C 'ibm-api-connect':36B 'improp':131C 'inform':67B,133C 'infrastructur':40B 'l':86B 'let':49B 'list':99B 'may':76B 'modifi':54B,120C 'network':88B 'onprem':5A,31A,93B 'poc':105B 'reli':69B,139C 'remot':51B,116C 'say':45B 'self':42B 'self-host':41B 'servic':18A,62B,128C,157C 'set':13A 'state':106B 'suppli':66B,134C 'tool':12A,55B,121C 'unauthor':153C 'user':9A,75B,145C 'v12':4A,30A,92B 'v12.1.0.0-v12.1.1.2':94B 'v12.1.1.3':97B 'vector':82B 'workaround':101B","nicknames":[],"mitigations":[],"who_affected":"Self-hosted IBM API Connect V12 OnPrem deployments on 12.1.0.0 to 12.1.1.2 are exposed to a logged-in user with low privileges. IBM rates the attack vector as adjacent network with high complexity, so exposure is greatest where untrusted users can reach the API Connect management network. Deployments already on 12.1.1.3 or later can skip it.","tier":"B","verified":{"fix":{"at":"2026-11-07T06:18:36Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2048},"products":{"at":"2026-11-07T06:18:36Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2048},"workarounds":{"at":"2026-11-07T06:18:36Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2048},"how_to_check":{"at":"2026-11-07T06:18:36Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2048},"who_affected":{"at":"2026-11-07T06:18:36Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2048}},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["apiconnectv12onprem","connectv12onprem"],"ptokens":["api","connect","onprem","v12"],"labels":["apigateway","authenticated","high","ibmapiconnect","infrastructure","selfhosted"],"campaign_type":null,"search_a":"'-17319':24A,27A '-2026':23A,26A '12.1.0.0':6A '12.1.1.2':7A '12.1.1.3':21A 'api':2A,28A 'authent':8A 'caus':15A 'chang':11A 'connect':3A,29A 'cve':22A,25A 'denial':16A 'fix':19A 'ibm':1A 'onprem':5A,31A 'servic':18A 'set':13A 'tool':12A 'user':9A 'v12':4A,30A","search_b":"'-862':79B '7.1':81B 'a/ac':84B 'adjac':87B 'affect':89B 'api':33B,38B,46B,90B 'api-gateway':32B 'attack':53B 'authent':35B,52B 'av':83B 'caus':58B 'client':65B 'client-suppli':64B 'configur':56B 'connect':39B,47B,91B 'could':48B 'cvss':80B 'cwe':78B 'decid':72B 'denial':60B 'exploit':103B 'fix':95B 'gateway':34B 'h/pr':85B 'host':43B 'ibm':37B,44B,98B 'ibm-api-connect':36B 'inform':67B 'infrastructur':40B 'l':86B 'let':49B 'list':99B 'may':76B 'modifi':54B 'network':88B 'onprem':93B 'poc':105B 'reli':69B 'remot':51B 'say':45B 'self':42B 'self-host':41B 'servic':62B 'state':106B 'suppli':66B 'tool':55B 'user':75B 'v12':92B 'v12.1.0.0-v12.1.1.2':94B 'v12.1.1.3':97B 'vector':82B 'workaround':101B","search_c":"'12.1.0.0':110C '12.1.1.2':112C 'allow':114C,147C,152C 'api':108C 'attack':118C 'authent':117C 'author':132C 'caus':124C 'chang':154C 'client':137C 'configur':122C 'connect':109C 'could':113C,151C 'decid':142C 'denial':126C 'disrupt':156C 'due':129C 'ibm':107C 'improp':131C 'inform':133C 'modifi':120C 'reli':139C 'remot':116C 'servic':128C,157C 'suppli':134C 'tool':121C 'unauthor':153C 'user':145C","first_public_at":"2026-11-07T05:18:41+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:L","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17319","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17319","severity":null,"published_at":"2026-11-07T05:18:41+00:00","modified_at":"2026-11-07T05:18:41+00:00","first_seen_at":"2026-11-07T05:46:03+00:00","fetched_at":"2026-11-07T05:46:03+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-17319:2048","url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","severity":null,"published_at":"2026-11-07T06:18:36+00:00","modified_at":"2026-11-07T06:18:36+00:00","first_seen_at":"2026-11-07T06:18:36+00:00","fetched_at":"2026-11-07T06:18:36+00:00","note":"Read IBM bulletin node -39 (2026-11-05): CVE-2026-17319 listed, CWE-862, CVSS 7.1; affected v12.1.0.0-v12.1.1.2, fixed v12.1.1.3, no workarounds. No exploitation/PoC stated; Feedly page claims were not used.","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"}