{"id":"CVE-2026-17279","kind":"vulnerability","aliases":["CVE-2026-17279"],"related":[],"title":"IBM API Connect: authenticated requests can stall service into denial of service","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 cause a denial of service due to uncontrolled resource consumption. Certain requests can cause internal processing to stall, which could make the service unavailable.","summary":"Certain requests to IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 can stall internal processing from uncontrolled resource consumption. A remote attacker with valid credentials can make the service unavailable.","severity":"high","cvss":7.7,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"API Connect","fixed":["10.0.8.13"],"affected":">= 10.0.8.0, <= 10.0.8.12","ecosystem":"vendor"},{"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","denial-of-service","ibm-api-connect","infrastructure","self-hosted"],"not_affected_if":["unaffected-version"],"how_to_check":"Check your installed API Connect version. Affected: 10.0.8.0 through 10.0.8.12, and 12.1.0.0 through 12.1.1.2 (IBM lists V12 OnPrem). Fixed: 10.0.8.13 and 12.1.1.3. Higher risk if untrusted users can hold valid accounts.","fix":"Upgrade to IBM API Connect 10.0.8.13 (10.0.8 line) or v12.1.1.3 (12.1 line). No workaround from IBM.","status":"open","published_at":"2026-11-07T05:18:33+00:00","first_seen_at":"2026-11-07T05:46:01+00:00","triaged_at":"2026-11-07T05:50:51+00:00","updated_at":"2026-11-07T06:23:06+00:00","category":"infrastructure","confidence":0.85,"triage":{"at":"2026-11-07T05:50:51Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"IBM API Connect: authenticated requests can stall service into denial of service","impact":"low","summary":"Certain requests to IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 can stall internal processing from uncontrolled resource consumption. A remote attacker with valid credentials can make the service unavailable.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["ibm-api-connect","self-hosted","api-gateway"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"service becomes unavailable to all users","analyst_note":"Confirm the fixed version and any workaround in the IBM security bulletin for CVE-2026-17279; the NVD entry alone does not give it.","how_to_check":"- Check the installed IBM 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- Confirm whether the deployment is exposed to untrusted users with accounts","plain_action":"","needs_analyst":true,"not_affected_if":["unaffected-version"],"who_is_affected":"IBM API Connect deployments in the affected version ranges are exposed. An attacker needs valid credentials and network access to the service. The sources do not state a fixed version or a non-default setting.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000694,"input_tokens":4254,"output_tokens":537,"severity_before":"high"},"analyst_status":"done","analyst_note":"Confirm the fixed version and any workaround in the IBM security bulletin for CVE-2026-17279; the NVD entry alone does not give it.","search":"'-17279':15A,18A '-2026':14A,17A '10.0.8.0':47B,76C '10.0.8.12':49B,78C '12.1.0.0':51B,80C '12.1.1.2':53B,82C 'allow':84C 'api':2A,19A,21A,26B,35B,45B,74C 'api-gateway':25B 'attack':64B,88C 'authent':4A,28B,87C 'caus':90C,103C 'certain':41B,100C 'connect':3A,20A,22A,36B,46B,75C 'consumpt':61B,99C 'could':83C,109C 'credenti':67B 'cve':13A,16A 'denial':10A,30B,92C 'denial-of-servic':29B 'due':95C 'gateway':27B 'host':40B 'ibm':1A,34B,44B,73C 'ibm-api-connect':33B 'infrastructur':37B 'intern':56B,104C 'make':69B,110C 'onprem':24A 'process':57B,105C 'remot':63B,86C 'request':5A,42B,101C 'resourc':60B,98C 'self':39B 'self-host':38B 'servic':8A,12A,32B,71B,94C,112C 'stall':7A,55B,107C 'unavail':72B,113C 'uncontrol':59B,97C 'v12':23A 'valid':66B","nicknames":[],"mitigations":[],"who_affected":"Self-hosted IBM API Connect installs on 10.0.8.0-10.0.8.12 or 12.1.0.0-12.1.1.2. An attacker needs valid credentials (low privilege, network access) and can send requests that stall internal processing and make the service unavailable. No data exposure is stated; teams whose API Connect accounts are limited to trusted staff can treat this as lower priority.","tier":"B","verified":{"fix":{"at":"2026-11-07T06:23:06Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2063},"products":{"at":"2026-11-07T06:23:06Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2063},"workarounds":{"at":"2026-11-07T06:23:06Z","by":"analyst","doc":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39","run_id":2063}},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["apiconnect","apiconnectv12onprem","connect","connectv12onprem"],"ptokens":["api","connect","onprem","v12"],"labels":["apigateway","authenticated","denialofservice","high","ibmapiconnect","infrastructure","selfhosted"],"campaign_type":null,"search_a":"'-17279':15A,18A '-2026':14A,17A 'api':2A,19A,21A 'authent':4A 'connect':3A,20A,22A 'cve':13A,16A 'denial':10A 'ibm':1A 'onprem':24A 'request':5A 'servic':8A,12A 'stall':7A 'v12':23A","search_b":"'10.0.8.0':47B '10.0.8.12':49B '12.1.0.0':51B '12.1.1.2':53B 'api':26B,35B,45B 'api-gateway':25B 'attack':64B 'authent':28B 'certain':41B 'connect':36B,46B 'consumpt':61B 'credenti':67B 'denial':30B 'denial-of-servic':29B 'gateway':27B 'host':40B 'ibm':34B,44B 'ibm-api-connect':33B 'infrastructur':37B 'intern':56B 'make':69B 'process':57B 'remot':63B 'request':42B 'resourc':60B 'self':39B 'self-host':38B 'servic':32B,71B 'stall':55B 'unavail':72B 'uncontrol':59B 'valid':66B","search_c":"'10.0.8.0':76C '10.0.8.12':78C '12.1.0.0':80C '12.1.1.2':82C 'allow':84C 'api':74C 'attack':88C 'authent':87C 'caus':90C,103C 'certain':100C 'connect':75C 'consumpt':99C 'could':83C,109C 'denial':92C 'due':95C 'ibm':73C 'intern':104C 'make':110C 'process':105C 'remot':86C 'request':101C 'resourc':98C 'servic':94C,112C 'stall':107C 'unavail':113C 'uncontrol':97C","first_public_at":"2026-11-07T05:18:33+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-17279","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17279","severity":null,"published_at":"2026-11-07T05:18:33+00:00","modified_at":"2026-11-07T05:18:33+00:00","first_seen_at":"2026-11-07T05:46:01+00:00","fetched_at":"2026-11-07T05:46:01+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-17279:2063","url":"https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41","severity":null,"published_at":"2026-11-07T06:23:06+00:00","modified_at":"2026-11-07T06:23:06+00:00","first_seen_at":"2026-11-07T06:23:06+00:00","fetched_at":"2026-11-07T06:23:06+00:00","note":"Read both IBM bulletins: 10.0.8.x fixed in 10.0.8.13 (bulletin -41), 12.1.x OnPrem fixed in 12.1.1.3 (bulletin -39); both say workarounds: None. 12.1 tail read directly; 10.0.8 table came via WebFetch summary (bulletin metadata says 10.0.8.0-10.0.8.13, table 10.0.8.0-10.0.8.12). No exploitation or PoC found (X not searched; low-profile authenticated DoS).","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"}