{"id":"CVE-2026-87339","kind":"vulnerability","aliases":["CVE-2026-87339"],"related":[],"title":"Oracle Siebel CRM Integration REST flaw leaks a subset of data","description":"Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: REST).  Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration.  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Siebel CRM Integration accessible data. CVSS 3.1 Base Score 3.1 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N).","summary":"Oracle Siebel CRM Integration's REST component has a flaw that lets an unauthenticated remote attacker read a subset of the data the integration can access. Exploitation needs a victim to take an action, and the CVSS score is 3.1 (low), with only confidentiality affected.","severity":"low","cvss":3.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["oracle","self-hosted","siebel-crm","vendor"],"not_affected_if":["not-siebel-crm"],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-20T22:20:11+00:00","first_seen_at":"2026-10-23T21:57:25+00:00","triaged_at":"2026-10-25T04:47:36+00:00","updated_at":"2026-10-25T04:47:36+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:47:36Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"network","title":"Oracle Siebel CRM Integration REST flaw leaks a subset of data","impact":"low","summary":"Oracle Siebel CRM Integration's REST component has a flaw that lets an unauthenticated remote attacker read a subset of the data the integration can access. Exploitation needs a victim to take an action, and the CVSS score is 3.1 (low), with only confidentiality affected.","category":"vendor","nicknames":[],"who_cares":["siebel-crm","oracle","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads a subset of Siebel integration data","analyst_note":"Check Oracle's Critical Patch Update advisory for the patched Siebel CRM Integration version and any REST endpoint workaround; the NVD entry gives no fix or check.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["not-siebel-crm"],"who_is_affected":"Sources list Siebel CRM Integration versions 17.0 through 26.9 as affected. Teams running Siebel CRM with the Integration REST interface exposed over HTTP should check their version. Teams not running Siebel CRM can skip it. Exposure depends on whether the REST endpoint is reachable from the network.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000593,"input_tokens":3470,"output_tokens":492,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-26.9':91C '-87339':14A,17A '/av':152C '17.0':90C '3.1':65B,142C,145C,151C 'access':51B,101C,131C,139C 'action':59B 'affect':70B,88C 'allow':96C 'attack':41B,98C,110C,120C,122C 'base':143C 'compon':32B,82C 'compromis':105C 'confidenti':69B,146C 'crm':3A,24B,28B,75C,81C,107C,137C 'cve':12A,15A 'cvss':62B,141C,148C,150C 'data':11A,47B,140C 'difficult':92C 'exploit':52B,94C 'flaw':6A,35B 'h/pr':154C 'host':21B 'http':103C 'human':112C 'impact':147C 'integr':4A,29B,49B,76C,108C,138C 'interact':113C 'l/i':158C 'leak':7A 'let':37B 'low':66B 'n':160C 'n/a':159C 'n/ac':153C 'n/ui':155C 'need':53B 'network':100C 'oracl':1A,18B,26B,79C 'person':116C 'product':77C 'r/s':156C 'read':42B,130C 'remot':40B 'requir':111C 'rest':5A,31B,83C 'result':127C 'score':63B,144C 'self':20B 'self-host':19B 'siebel':2A,23B,27B,74C,80C,106C,136C 'siebel-crm':22B 'subset':9A,44B,134C 'success':109C,121C 'support':84C 'take':57B 'u/c':157C 'unauthent':39B,97C 'unauthor':129C 'vector':149C 'vendor':25B 'version':85C 'via':102C 'victim':55B 'vulner':71C,95C,125C","nicknames":[],"mitigations":[],"who_affected":"Sources list Siebel CRM Integration versions 17.0 through 26.9 as affected. Teams running Siebel CRM with the Integration REST interface exposed over HTTP should check their version. Teams not running Siebel CRM can skip it. Exposure depends on whether the REST endpoint is reachable from the network.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:11+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87339","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87339","severity":null,"published_at":"2026-10-20T22:20:11+00:00","modified_at":"2026-10-21T18:44:19+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"}