{"id":"CVE-2026-87396","kind":"vulnerability","aliases":["CVE-2026-87396"],"related":[],"title":"Oracle Outside In: unauthenticated HTTP flaw exposes critical data to attackers","description":"Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Core).   The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology.  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).","summary":"Oracle Outside In Core version 8.5.8 has a flaw that lets an unauthenticated attacker over HTTP access data the product can reach. Exploitation needs a person other than the attacker to take an action, and the CVSS score is 6.5 with confidentiality impact only.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["document-parsing","fusion-middleware","oracle","outside-in","package"],"not_affected_if":["version-not-8.5.8"],"how_to_check":"- Check whether Oracle Outside In Technology is installed and which version it reports, looking for `8.5.8` in the product's version output or installer records.\n- Check whether any HTTP-facing application bundles Outside In Core, since the sources do not name a specific product.","fix":null,"status":"open","published_at":"2026-10-20T22:20:17+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","triaged_at":"2026-10-25T03:51:10+00:00","updated_at":"2026-10-25T03:51:10+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T03:51:10Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"Oracle Outside In: unauthenticated HTTP flaw exposes critical data to attackers","impact":"medium","summary":"Oracle Outside In Core version 8.5.8 has a flaw that lets an unauthenticated attacker over HTTP access data the product can reach. Exploitation needs a person other than the attacker to take an action, and the CVSS score is 6.5 with confidentiality impact only.","category":"package","nicknames":[],"who_cares":["oracle","fusion-middleware","outside-in","document-parsing"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads critical data the product can access","analyst_note":"Find Oracle's Critical Patch Update advisory for the Outside In 8.5.8 fix version and which products embed Outside In Core, via https://nvd.nist.gov/vuln/detail/CVE-2026-87396.","how_to_check":"- Check whether Oracle Outside In Technology is installed and which version it reports, looking for `8.5.8` in the product's version output or installer records.\n- Check whether any HTTP-facing application bundles Outside In Core, since the sources do not name a specific product.","needs_analyst":true,"not_affected_if":["version-not-8.5.8"],"who_is_affected":"The sources name only Oracle Outside In Technology 8.5.8 under Oracle Fusion Middleware. Teams that do not ship or run that version can skip it. Whether a given application is exposed to HTTP input is not stated in the sources.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000635,"input_tokens":3485,"output_tokens":572,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-87396':14A,17A '/av':160C '3.1':150C,159C '6.5':68B,153C '8.5.8':34B,95C 'access':45B,104C,134C,140C,147C 'action':62B 'affect':93C 'allow':99C 'attack':11A,42B,58B,101C,114C,124C,126C 'base':151C 'complet':139C 'compon':84C 'compromis':108C 'confidenti':70B,154C 'core':32B,87C 'critic':8A,136C 'cve':12A,15A 'cvss':65B,149C,156C,158C 'data':9A,46B,137C,148C 'document':19B 'document-pars':18B 'easili':96C 'exploit':51B,97C 'expos':7A 'flaw':6A,37B 'fusion':22B,82C 'fusion-middlewar':21B 'h/i':166C 'http':5A,44B,106C 'human':116C 'impact':71B,155C 'interact':117C 'l/pr':162C 'let':39B 'middlewar':23B,83C 'n':168C 'n/a':167C 'n/ac':161C 'n/ui':163C 'need':52B 'network':103C 'oracl':1A,24B,29B,75C,81C,109C,143C 'outsid':2A,26B,30B,76C,85C,110C,144C 'outside-in':25B 'packag':28B 'pars':20B 'person':54B,120C 'product':48B,79C 'r/s':164C 'reach':50B 'requir':115C 'result':131C 'score':66B,152C 'success':113C,125C 'support':89C 'take':60B 'technolog':78C,112C,146C 'u/c':165C 'unauthent':4A,41B,100C 'unauthor':133C 'vector':157C 'version':33B,90C 'via':105C 'vulner':72C,98C,129C","nicknames":[],"mitigations":[],"who_affected":"The sources name only Oracle Outside In Technology 8.5.8 under Oracle Fusion Middleware. Teams that do not ship or run that version can skip it. Whether a given application is exposed to HTTP input is not stated in the sources.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:17+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87396","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87396","severity":null,"published_at":"2026-10-20T22:20:17+00:00","modified_at":"2026-10-21T18:44:40+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"}