{"id":"CVE-2026-87356","kind":"vulnerability","aliases":["CVE-2026-87356"],"related":[],"title":"Oracle E-Business Suite: Valid Session flaw lets low-privileged users take over","description":"Vulnerability in the Applications Platform Engineering product of Oracle E-Business Suite (component: Valid Session).  Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Applications Platform Engineering executes to compromise Applications Platform Engineering.  Successful attacks of this vulnerability can result in takeover of Applications Platform Engineering. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).","summary":"Oracle E-Business Suite's Applications Platform Engineering component, versions 12.2.3 through 12.2.15, has a flaw in its Valid Session handling. An attacker with a low-privileged logon to the host where it runs can take over the component, with full confidentiality, integrity and availability impact.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["enterprise-apps","oracle-ebs","package","self-hosted"],"not_affected_if":["unsupported-version-range"],"how_to_check":"- Check the installed E-Business Suite release version against `12.2.3` through `12.2.15` in the Oracle E-Business Suite environment\n- unknown for any other check, the sources do not say","fix":"- Apply the Oracle Critical Patch Update fix for Oracle E-Business Suite Applications Platform Engineering, moving past `12.2.15` (exact patch unknown from the sources)","status":"open","published_at":"2026-10-20T22:20:13+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","triaged_at":"2026-10-25T03:08:51+00:00","updated_at":"2026-10-25T03:08:51+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T03:08:51Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Oracle E-Business Suite Applications Platform Engineering, moving past `12.2.15` (exact patch unknown from the sources)","reach":"local","title":"Oracle E-Business Suite: Valid Session flaw lets low-privileged users take over","impact":"high","summary":"Oracle E-Business Suite's Applications Platform Engineering component, versions 12.2.3 through 12.2.15, has a flaw in its Valid Session handling. An attacker with a low-privileged logon to the host where it runs can take over the component, with full confidentiality, integrity and availability impact.","category":"package","nicknames":[],"who_cares":["oracle-ebs","enterprise-apps","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"attacker takes over the component, reading and changing all its data","analyst_note":"Find Oracle's Critical Patch Update advisory for this CVE to confirm the exact fixed patch and any workaround; source gives only the NVD entry.","how_to_check":"- Check the installed E-Business Suite release version against `12.2.3` through `12.2.15` in the Oracle E-Business Suite environment\n- unknown for any other check, the sources do not say","needs_analyst":true,"not_affected_if":["unsupported-version-range"],"who_is_affected":"Teams running Oracle E-Business Suite 12.2.3 through 12.2.15 where users hold a low-privileged logon to the infrastructure hosting Applications Platform Engineering. The sources do not say which deployment setups are most exposed, so unknown for narrower scoping. Teams on releases outside 12.2.3 to 12.2.15 are not listed as affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000665,"input_tokens":3467,"output_tokens":637,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-87356':17A,20A '/av':152C '12.2.15':44B,102C '12.2.3':42B,101C '3.1':139C,151C '7.8':142C 'affect':99C 'allow':106C 'app':23B 'applic':37B,82C,116C,122C,135C 'attack':54B,109C,126C 'avail':77B,146C 'base':140C 'busi':4A,34B,90C 'compon':40B,71B,92C 'compromis':121C 'confidenti':74B,143C 'cve':15A,18A 'cvss':138C,148C,150C 'e':3A,33B,89C 'e-busi':2A,32B,88C 'easili':103C 'eb':26B 'engin':39B,84C,118C,124C,137C 'enterpris':22B 'enterprise-app':21B 'execut':119C 'exploit':104C 'flaw':8A,47B 'full':73B 'h':160C 'h/a':159C 'h/i':158C 'handl':52B 'host':30B,63B 'impact':78B,147C 'infrastructur':114C 'integr':75B,144C 'l/ac':153C 'l/pr':154C 'l/ui':155C 'let':9A 'logon':60B,111C 'low':11A,58B,107C 'low-privileg':10A,57B 'n/s':156C 'oracl':1A,25B,31B,87C 'oracle-eb':24B 'packag':27B 'platform':38B,83C,117C,123C,136C 'privileg':12A,59B,108C 'product':85C 'result':131C 'run':66B 'score':141C 'self':29B 'self-host':28B 'session':7A,51B,94C 'success':125C 'suit':5A,35B,91C 'support':95C 'take':14A,68B 'takeov':133C 'u/c':157C 'user':13A 'valid':6A,50B,93C 'vector':149C 'version':41B,96C 'vulner':79C,105C,129C","nicknames":[],"mitigations":[],"who_affected":"Teams running Oracle E-Business Suite 12.2.3 through 12.2.15 where users hold a low-privileged logon to the infrastructure hosting Applications Platform Engineering. The sources do not say which deployment setups are most exposed, so unknown for narrower scoping. Teams on releases outside 12.2.3 to 12.2.15 are not listed as affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87356","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87356","severity":null,"published_at":"2026-10-20T22:20:13+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"}