{"id":"CVE-2026-91438","kind":"vulnerability","aliases":["CVE-2026-91438"],"related":[],"title":"Oracle Siebel CRM Deployment: low-privilege HTTP flaw exposes and alters CRM data","description":"Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Deployment.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data as well as  unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N).","summary":"Oracle Siebel CRM Deployment, Server Infrastructure component, versions 17.0 through 26.9, has a flaw reachable over HTTP. An attacker with a low-privilege account can read critical data and modify or delete some CRM records.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["crm","oracle","self-hosted","siebel-crm","vendor"],"not_affected_if":["unknown"],"how_to_check":"- Identify the Siebel CRM Deployment version in use and compare it against the affected range 17.0-26.9\n- unknown for other checks; the sources do not say which configuration or file to inspect","fix":"- Apply the Oracle Siebel CRM security patch for the Server Infrastructure component; the sources do not name the fixed version\n- unknown for other actions","status":"open","published_at":"2026-10-20T22:20:47+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T03:34:09+00:00","updated_at":"2026-10-25T03:34:09+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:34:09Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Siebel CRM security patch for the Server Infrastructure component; the sources do not name the fixed version\n- unknown for other actions","reach":"network","title":"Oracle Siebel CRM Deployment: low-privilege HTTP flaw exposes and alters CRM data","impact":"high","summary":"Oracle Siebel CRM Deployment, Server Infrastructure component, versions 17.0 through 26.9, has a flaw reachable over HTTP. An attacker with a low-privilege account can read critical data and modify or delete some CRM records.","category":"vendor","nicknames":[],"who_cares":["siebel-crm","oracle","self-hosted","crm"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker reads critical CRM data and modifies some records","analyst_note":"Find Oracle's Critical Patch Update advisory for the fixed Siebel CRM Deployment version and the list of affected configurations.","how_to_check":"- Identify the Siebel CRM Deployment version in use and compare it against the affected range 17.0-26.9\n- unknown for other checks; the sources do not say which configuration or file to inspect","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Organizations running Siebel CRM Deployment versions 17.0 through 26.9 with network-reachable HTTP access to the server infrastructure. The sources do not say which deployment configurations are exposed, so teams on other versions can likely skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000631,"input_tokens":3506,"output_tokens":561,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-26.9':87C '-91438':17A,20A '/av':158C '17.0':38B,86C '26.9':40B '3.1':146C,157C '7.1':149C 'access':97C,114C,120C,126C,136C,143C 'account':54B 'affect':84C 'allow':91C 'alter':12A 'attack':48B,94C,106C 'base':147C 'complet':119C 'compon':36B,77C 'compromis':101C 'confidenti':150C 'critic':57B,116C 'crm':3A,13A,21B,28B,32B,64B,70C,76C,103C,124C,141C 'cve':15A,18A 'cvss':145C,154C,156C 'data':14A,58B,117C,127C,144C 'delet':62B,135C 'deploy':4A,33B,71C,104C,125C,142C 'easili':88C 'exploit':89C 'expos':10A 'flaw':9A,43B 'h/i':164C 'host':25B 'http':8A,46B,99C 'impact':153C 'infrastructur':35B,79C 'insert':133C 'integr':152C 'l/a':165C 'l/pr':160C 'l/ui':161C 'low':6A,52B,92C 'low-privileg':5A,51B 'modifi':60B 'n':166C 'n/ac':159C 'n/s':162C 'network':96C 'oracl':1A,22B,30B,74C 'privileg':7A,53B,93C 'product':72C 'reachabl':44B 'read':56B 'record':65B 'result':111C 'score':148C 'self':24B 'self-host':23B 'server':34B,78C 'siebel':2A,27B,31B,69C,75C,102C,123C,140C 'siebel-crm':26B 'success':105C 'support':80C 'u/c':163C 'unauthor':113C,131C 'updat':132C 'vector':155C 'vendor':29B 'version':37B,81C 'via':98C 'vulner':66C,90C,109C 'well':129C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Siebel CRM Deployment versions 17.0 through 26.9 with network-reachable HTTP access to the server infrastructure. The sources do not say which deployment configurations are exposed, so teams on other versions can likely skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:47+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91438","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91438","severity":null,"published_at":"2026-10-20T22:20:47+00:00","modified_at":"2026-10-23T21:17:27+00:00","first_seen_at":"2026-10-23T21:57:26+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"}