{"id":"CVE-2026-91652","kind":"vulnerability","aliases":["CVE-2026-91652"],"related":[],"title":"Oracle Essbase: low-privilege network user can read a subset of data","description":"Vulnerability in Oracle Essbase (component: Security).   The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Essbase.  While the vulnerability is in Oracle Essbase, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 5.0 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).","summary":"A low-privileged user with network access over HTTP can exploit a flaw in the Security component of Oracle Essbase. The result is unauthorized read access to a subset of the data Essbase holds.","severity":"medium","cvss":5.0,"epss":0.00242,"exploited":false,"exploited_at":null,"products":[{"name":"oracle essbase","fixed":[],"affected":"= 21.8.3.0.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["oracle-essbase","other","self-hosted"],"not_affected_if":["other-essbase-versions"],"how_to_check":"- Confirm the deployed Essbase version with the Oracle Essbase admin tooling; the affected version listed is `21.8.3.0.0`\n- unknown","fix":"- Apply the Oracle Critical Patch Update fix for Essbase; the fixed version is unknown in the sources","status":"open","published_at":"2026-10-20T22:21:05+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T04:29:30+00:00","updated_at":"2026-10-25T04:29:30+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-25T04:29:30Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Essbase; the fixed version is unknown in the sources","reach":"internet","title":"Oracle Essbase: low-privilege network user can read a subset of data","impact":"low","summary":"A low-privileged user with network access over HTTP can exploit a flaw in the Security component of Oracle Essbase. The result is unauthorized read access to a subset of the data Essbase holds.","category":"other","nicknames":[],"who_cares":["oracle-essbase","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker reads a subset of Essbase-accessible data","analyst_note":"Check the Oracle Critical Patch Update advisory for the fixed Essbase version and the exact affected configurations.","how_to_check":"- Confirm the deployed Essbase version with the Oracle Essbase admin tooling; the affected version listed is `21.8.3.0.0`\n- unknown","needs_analyst":true,"not_affected_if":["other-essbase-versions"],"who_is_affected":"Teams running Oracle Essbase version 21.8.3.0.0 that expose its HTTP interface to users with low-privileged accounts. The sources do not say which configurations are exposed beyond that.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000592,"input_tokens":3516,"output_tokens":481,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-91652':16A,19A '/av':139C '21.8.3.0.0':77C '3.1':129C,138C '5.0':132C 'access':36B,55B,87C,119C,126C 'addit':105C 'affect':75C 'allow':81C 'attack':84C,101C,110C 'base':130C 'c/c':144C 'chang':108C 'compon':46B,68C 'compromis':91C 'confidenti':133C 'cve':14A,17A 'cvss':128C,135C,137C 'data':13A,61B,127C 'easili':78C 'essbas':2A,24B,49B,62B,67C,93C,100C,125C 'essbase':21A 'exploit':40B,79C 'flaw':42B 'hold':63B 'host':28B 'http':38B,89C 'impact':104C,134C 'l/i':145C 'l/pr':141C 'l/ui':142C 'low':4A,31B,82C 'low-privileg':3A,30B 'may':102C 'n':147C 'n/a':146C 'n/ac':140C 'n/s':143C 'network':6A,35B,86C 'oracl':1A,23B,48B,66C,92C,99C,124C 'oracle':20A 'oracle-essbas':22B 'privileg':5A,32B,83C 'product':106C 'read':9A,54B,118C 'result':51B,115C 'scope':107C 'score':131C 'secur':45B,69C 'self':27B 'self-host':26B 'signific':103C 'subset':11A,58B,122C 'success':109C 'support':71C 'unauthor':53B,117C 'user':7A,33B 'vector':136C 'version':72C 'via':88C 'vulner':64C,80C,96C,113C","nicknames":[],"mitigations":[],"who_affected":"Teams running Oracle Essbase version 21.8.3.0.0 that expose its HTTP interface to users with low-privileged accounts. The sources do not say which configurations are exposed beyond that.","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:L/PR:L/UI:N/S:C/C:L/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91652","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91652","severity":null,"published_at":"2026-10-20T22:21:05+00:00","modified_at":"2026-10-23T15:00:04+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-2026-91652","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91652","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"}