{"id":"CVE-2026-91377","kind":"vulnerability","aliases":["CVE-2026-91377"],"related":[],"title":"Oracle Siebel CRM Integration: unauthenticated HTTP flaw exposes critical data","description":"Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration).  Supported versions that are affected are 25.12-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).","summary":"Oracle Siebel CRM Integration's Open Integration component has a flaw in versions 25.12 through 26.9 that lets an unauthenticated attacker over HTTP reach data. Successful exploitation gives unauthorized access to critical data, with high confidentiality impact and no integrity or availability impact per the CVSS vector.","severity":"high","cvss":7.5,"epss":0.00303,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["enterprise","oracle","self-hosted","siebel-crm","vendor"],"not_affected_if":["version-outside-25.12-26.9"],"how_to_check":"- Check the installed Siebel CRM Integration version against the affected range 25.12-26.9 in the Oracle Siebel deployment\n- Confirm whether the Open Integration component is exposed over HTTP to the network","fix":"- Apply the Oracle Critical Patch Update fix for Siebel CRM Integration; the exact patched version is unknown from the sources\n- Restrict network access to the Open Integration HTTP endpoints until patched","status":"open","published_at":"2026-10-20T22:20:40+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T03:18:25+00:00","updated_at":"2026-10-25T12:38:52+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:18:25Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Siebel CRM Integration; the exact patched version is unknown from the sources\n- Restrict network access to the Open Integration HTTP endpoints until patched","reach":"internet","title":"Oracle Siebel CRM Integration: unauthenticated HTTP flaw exposes critical data","impact":"high","summary":"Oracle Siebel CRM Integration's Open Integration component has a flaw in versions 25.12 through 26.9 that lets an unauthenticated attacker over HTTP reach data. Successful exploitation gives unauthorized access to critical data, with high confidentiality impact and no integrity or availability impact per the CVSS vector.","category":"vendor","nicknames":[],"who_cares":["siebel-crm","oracle","self-hosted","enterprise"],"confidence":0.6,"needs_auth":"no","worst_case":"Unauthenticated attacker reads critical Siebel CRM data over HTTP","analyst_note":"Confirm the patched Siebel CRM Integration version and the Oracle CPU advisory details from the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-91377.","how_to_check":"- Check the installed Siebel CRM Integration version against the affected range 25.12-26.9 in the Oracle Siebel deployment\n- Confirm whether the Open Integration component is exposed over HTTP to the network","needs_analyst":true,"not_affected_if":["version-outside-25.12-26.9"],"who_is_affected":"Organizations running Oracle Siebel CRM Integration in the affected version range with the Open Integration component reachable over HTTP from the network. Deployments where that endpoint is not network-reachable or that run outside 25.12-26.9 are likely not affected; the sources do not give further detail.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00068,"input_tokens":3458,"output_tokens":669,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-26.9':94C '-91377':13A,16A '/av':145C '25.12':39B,93C '26.9':41B '3.1':135C,144C '7.5':138C 'access':55B,103C,120C,126C,132C 'affect':91C 'allow':98C 'attack':46B,100C,112C 'avail':67B 'base':136C 'complet':125C 'compon':33B,84C 'compromis':107C 'confidenti':61B,139C 'critic':9A,57B,122C 'crm':3A,24B,28B,77C,83C,109C,130C 'cve':11A,14A 'cvss':71B,134C,141C,143C 'data':10A,50B,58B,123C,133C 'easili':95C 'enterpris':17B 'exploit':52B,96C 'expos':8A 'flaw':7A,36B 'give':53B 'h/i':151C 'high':60B 'host':21B 'http':6A,48B,105C 'impact':62B,68B,140C 'integr':4A,29B,32B,65B,78C,86C,110C,131C 'l/pr':147C 'let':43B 'n':153C 'n/a':152C 'n/ac':146C 'n/s':149C 'n/ui':148C 'network':102C 'open':31B,85C 'oracl':1A,18B,26B,81C 'per':69B 'product':79C 'reach':49B 'result':117C 'score':137C 'self':20B 'self-host':19B 'siebel':2A,23B,27B,76C,82C,108C,129C 'siebel-crm':22B 'success':51B,111C 'support':87C 'u/c':150C 'unauthent':5A,45B,99C 'unauthor':54B,119C 'vector':72B,142C 'vendor':25B 'version':38B,88C 'via':104C 'vulner':73C,97C,115C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle Siebel CRM Integration in the affected version range with the Open Integration component reachable over HTTP from the network. Deployments where that endpoint is not network-reachable or that run outside 25.12-26.9 are likely not affected; the sources do not give further detail.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:40+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91377","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91377","severity":null,"published_at":"2026-10-20T22:20:40+00:00","modified_at":"2026-10-21T18:45:11+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","fetched_at":"2026-10-23T22:29:00+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91377","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91377","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:52+00:00","fetched_at":"2026-10-25T12:38:52+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"}