{"id":"CVE-2026-87395","kind":"vulnerability","aliases":["CVE-2026-87395"],"related":[],"title":"Oracle Outside In: unauthenticated HTTP request crashes the library, denial of service","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 of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 7.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).","summary":"Oracle Outside In Technology, a document-parsing library in Oracle Fusion Middleware, can be made to hang or repeatedly crash by a crafted input. An unauthenticated attacker with network access over HTTP can cause a complete denial of service, but the advisory describes no code execution or data disclosure.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["fusion-middleware","oracle","outside-in","package","self-hosted"],"not_affected_if":["no-oracle-fusion-middleware"],"how_to_check":"- Check whether Oracle Outside In Technology is in use: look for Outside In libraries or Oracle Fusion Middleware components in your deployment, which the sources do not list in detail\n- Confirm the affected supported version: `8.5.8` per the sources","fix":"- Apply the Oracle Critical Patch Update fix for Outside In Technology; the exact patched version is unknown from the sources\n- Check the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-87395 for the vendor advisory link","status":"open","published_at":"2026-10-20T22:20:17+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","triaged_at":"2026-10-25T03:18:46+00:00","updated_at":"2026-10-25T03:18:46+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T03:18:46Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Outside In Technology; the exact patched version is unknown from the sources\n- Check the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-87395 for the vendor advisory link","reach":"internet","title":"Oracle Outside In: unauthenticated HTTP request crashes the library, denial of service","impact":"medium","summary":"Oracle Outside In Technology, a document-parsing library in Oracle Fusion Middleware, can be made to hang or repeatedly crash by a crafted input. An unauthenticated attacker with network access over HTTP can cause a complete denial of service, but the advisory describes no code execution or data disclosure.","category":"package","nicknames":[],"who_cares":["oracle","fusion-middleware","outside-in","self-hosted"],"confidence":0.7,"needs_auth":"no","worst_case":"Service hangs or repeatedly crashes, causing complete denial of service","analyst_note":"Find the Oracle advisory and the patched version for Outside In Core 8.5.8 and which Fusion Middleware products bundle it.","how_to_check":"- Check whether Oracle Outside In Technology is in use: look for Outside In libraries or Oracle Fusion Middleware components in your deployment, which the sources do not list in detail\n- Confirm the affected supported version: `8.5.8` per the sources","needs_analyst":true,"not_affected_if":["no-oracle-fusion-middleware"],"who_is_affected":"Teams that run Oracle Fusion Middleware with Outside In Technology, which parses uploaded or fetched documents over HTTP, are exposed to a crash or hang. The sources do not say which products or configurations embed the library by default, so the exact scope is unknown. Teams that do not run Oracle Fusion Middleware or Outside In can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00069,"input_tokens":3470,"output_tokens":685,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-87395':15A,18A '/av':157C '3.1':147C,156C '7.5':150C '8.5.8':103C 'abil':130C 'access':60B,112C 'advisori':72B 'affect':101C 'allow':107C 'attack':57B,109C,122C 'avail':151C 'base':148C 'caus':64B,132C 'code':75B 'complet':66B,139C 'compon':92C 'compromis':116C 'core':95C 'craft':53B 'crash':7A,50B,138C 'cve':13A,16A 'cvss':146C,153C,155C 'data':78B 'denial':10A,67B 'describ':73B 'disclosur':79B 'document':36B 'document-pars':35B 'dos':140C 'easili':104C 'execut':76B 'exploit':105C 'frequent':136C 'fusion':20B,41B,90C 'fusion-middlewar':19B 'h':165C 'hang':47B,134C 'host':29B 'http':5A,62B,114C 'impact':152C 'input':54B 'l/pr':159C 'librari':9A,38B 'made':45B 'middlewar':21B,42B,91C 'n/a':164C 'n/ac':158C 'n/i':163C 'n/s':161C 'n/ui':160C 'network':59B,111C 'oracl':1A,22B,30B,40B,83C,89C,117C,142C 'outsid':2A,24B,31B,84C,93C,118C,143C 'outside-in':23B 'packag':26B 'pars':37B 'product':87C 'repeat':49B,137C 'request':6A 'result':127C 'score':149C 'self':28B 'self-host':27B 'servic':12A,69B 'success':121C 'support':97C 'technolog':33B,86C,120C,145C 'u/c':162C 'unauthent':4A,56B,108C 'unauthor':129C 'vector':154C 'version':98C 'via':113C 'vulner':80C,106C,125C","nicknames":[],"mitigations":[],"who_affected":"Teams that run Oracle Fusion Middleware with Outside In Technology, which parses uploaded or fetched documents over HTTP, are exposed to a crash or hang. The sources do not say which products or configurations embed the library by default, so the exact scope is unknown. Teams that do not run Oracle Fusion Middleware or Outside In can skip it.","tier":"B","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:N/S:U/C:N/I:N/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87395","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87395","severity":null,"published_at":"2026-10-20T22:20:17+00:00","modified_at":"2026-10-22T19:18:03+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"}