{"id":"CVE-2026-91650","kind":"vulnerability","aliases":["CVE-2026-91650"],"related":[],"title":"Oracle Essbase: Java Based Agent flaw leaks a subset of data","description":"Vulnerability in Oracle Essbase (component: Java Based Agent).   The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Essbase.  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 3.7 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).","summary":"An unauthenticated remote attacker can reach the Java Based Agent in Oracle Essbase over HTTP, but exploitation is hard. A successful attack gives read-only access to a subset of data Essbase can reach.","severity":"low","cvss":3.7,"epss":0.00269,"exploited":false,"exploited_at":null,"products":[{"name":"oracle essbase","fixed":[],"affected":"= 21.8.3.0.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["oracle-essbase","self-hosted","vendor"],"not_affected_if":["no-network-exposure","other-versions"],"how_to_check":"- Confirm the deployed Essbase version with the Oracle admin tools; the affected version listed is `21.8.3.0.0`\n- Check whether the Java Based Agent component is running and reachable over HTTP from untrusted networks","fix":"- Apply the Oracle Critical Patch Update fix for Essbase; the sources do not name the fixed version\n- Restrict network access to the Essbase agent endpoints","status":"open","published_at":"2026-10-20T22:21:05+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T04:43:38+00:00","updated_at":"2026-10-25T04:43:38+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:43:38Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Essbase; the sources do not name the fixed version\n- Restrict network access to the Essbase agent endpoints","reach":"internet","title":"Oracle Essbase: Java Based Agent flaw leaks a subset of data","impact":"low","summary":"An unauthenticated remote attacker can reach the Java Based Agent in Oracle Essbase over HTTP, but exploitation is hard. A successful attack gives read-only access to a subset of data Essbase can reach.","category":"vendor","nicknames":[],"who_cares":["oracle-essbase","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads a subset of Essbase-accessible data over HTTP","analyst_note":"Check Oracle's Critical Patch Update advisory for the fixed version and whether the Java Based Agent is enabled by default; the sources here do not say.","how_to_check":"- Confirm the deployed Essbase version with the Oracle admin tools; the affected version listed is `21.8.3.0.0`\n- Check whether the Java Based Agent component is running and reachable over HTTP from untrusted networks","needs_analyst":true,"not_affected_if":["other-versions","no-network-exposure"],"who_is_affected":"Teams running Oracle Essbase version 21.8.3.0.0 with the Java Based Agent reachable over the network. Installations that keep Essbase on a private network with no HTTP exposure face lower risk. Teams on other Essbase versions should check Oracle's advisory.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000641,"input_tokens":3492,"output_tokens":583,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-91650':14A,17A '/av':124C '21.8.3.0.0':77C '3.1':114C,123C '3.7':117C 'access':53B,87C,104C,111C 'affect':75C 'agent':5A,36B,69C 'allow':82C 'attack':30B,48B,84C,95C 'base':4A,35B,68C,115C 'compon':66C 'compromis':91C 'confidenti':118C 'cve':12A,15A 'cvss':113C,120C,122C 'data':11A,58B,112C 'difficult':78C 'essbas':2A,22B,39B,59B,65C,93C,110C 'essbase':19A 'exploit':43B,80C 'flaw':6A 'give':49B 'h/pr':126C 'hard':45B 'host':25B 'http':41B,89C 'impact':119C 'java':3A,34B,67C 'l/i':130C 'leak':7A 'n':132C 'n/a':131C 'n/ac':125C 'n/s':128C 'n/ui':127C 'network':86C 'oracl':1A,21B,38B,64C,92C,109C 'oracle':18A 'oracle-essbas':20B 'reach':32B,61B 'read':51B,103C 'read-on':50B 'remot':29B 'result':100C 'score':116C 'self':24B 'self-host':23B 'subset':9A,56B,107C 'success':47B,94C 'support':71C 'u/c':129C 'unauthent':28B,83C 'unauthor':102C 'vector':121C 'vendor':26B 'version':72C 'via':88C 'vulner':62C,81C,98C","nicknames":[],"mitigations":[],"who_affected":"Teams running Oracle Essbase version 21.8.3.0.0 with the Java Based Agent reachable over the network. Installations that keep Essbase on a private network with no HTTP exposure face lower risk. Teams on other Essbase versions should check Oracle's advisory.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:21:05+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91650","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91650","severity":null,"published_at":"2026-10-20T22:21:05+00:00","modified_at":"2026-10-23T14:59:24+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91650","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91650","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:55+00:00","fetched_at":"2026-10-24T13:15:55+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"}