{"id":"CVE-2026-83426","kind":"vulnerability","aliases":["CVE-2026-83426"],"related":[],"title":"Oracle Access Manager: authentication engine flaw lets unauthenticated attacker alter data","description":"Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine).  Supported versions that are affected are 12.2.1.4.0 and  14.1.2.1.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager.  While the vulnerability is in Oracle Access Manager, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Oracle Access Manager accessible data as well as  unauthorized access to critical data or complete access to all Oracle Access Manager accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).","summary":"Oracle Access Manager's Authentication Engine has a flaw that lets an unauthenticated attacker reach it over HTTP. A successful attack can create, change or delete critical data and affect other products connected to it.","severity":"high","cvss":8.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["identity","oracle-access-manager","oracle-fusion-middleware","runtime","self-hosted"],"not_affected_if":["other-versions"],"how_to_check":"Check whether the installed Oracle Access Manager version is 12.2.1.4.0 or 14.1.2.1.0, the affected versions listed.","fix":null,"status":"open","published_at":"2026-10-20T22:19:57+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","triaged_at":"2026-10-23T22:37:10+00:00","updated_at":"2026-10-23T22:37:10+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:37:10Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Oracle Access Manager: authentication engine flaw lets unauthenticated attacker alter data","impact":"high","summary":"Oracle Access Manager's Authentication Engine has a flaw that lets an unauthenticated attacker reach it over HTTP. A successful attack can create, change or delete critical data and affect other products connected to it.","category":"runtime","who_cares":["oracle-access-manager","oracle-fusion-middleware","self-hosted","identity"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker modifies or deletes critical data and reads it across connected products","analyst_note":"","how_to_check":"Check whether the installed Oracle Access Manager version is 12.2.1.4.0 or 14.1.2.1.0, the affected versions listed.","needs_analyst":false,"not_affected_if":["other-versions"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000957,"input_tokens":3149,"output_tokens":1284,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-83426':14A,17A '/av':175C '12.2.1.4.0':84C '14.1.2.1.0':86C '3.1':163C,174C '8.7':166C 'access':2A,21B,32B,68C,96C,102C,110C,133C,140C,142C,148C,154C,158C,160C 'addit':116C 'affect':60B,82C 'allow':91C 'alter':10A 'attack':9A,44B,51B,93C,112C,121C 'authent':4A,35B,76C 'base':164C 'c/c':180C 'chang':54B,119C 'complet':153C 'compon':75C 'compromis':100C 'confidenti':167C 'connect':63B 'creat':53B 'creation':129C 'critic':57B,135C,150C 'cve':12A,15A 'cvss':162C,171C,173C 'data':11A,58B,136C,143C,151C,161C 'delet':56B,130C 'difficult':87C 'engin':5A,36B,77C 'exploit':89C 'flaw':6A,39B 'fusion':25B,73C 'h/a':182C 'h/i':181C 'h/pr':177C 'host':30B 'http':48B,98C 'ident':18B 'impact':115C,170C 'integr':169C 'let':7A,41B 'manag':3A,22B,33B,69C,103C,111C,141C,159C 'may':113C 'middlewar':26B,74C 'modif':132C 'n':183C 'n/ac':176C 'n/s':179C 'n/ui':178C 'network':95C 'oracl':1A,20B,24B,31B,67C,72C,101C,109C,139C,157C 'oracle-access-manag':19B 'oracle-fusion-middlewar':23B 'product':62B,70C,117C 'reach':45B 'result':126C 'runtim':27B 'scope':118C 'score':165C 'self':29B 'self-host':28B 'signific':114C 'success':50B,120C 'support':78C 'unauthent':8A,43B,92C 'unauthor':128C,147C 'vector':172C 'version':79C 'via':97C 'vulner':64C,90C,106C,124C 'well':145C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:57+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-83426","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83426","severity":null,"published_at":"2026-10-20T22:19:57+00:00","modified_at":"2026-10-21T18:44:19+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","fetched_at":"2026-10-23T22:29:00+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}