{"id":"CVE-2026-101391","kind":"vulnerability","aliases":["CVE-2026-101391"],"related":[],"title":"Oracle Siebel CRM Marketing: unauthenticated HTTP flaw exposes and alters some data","description":"Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Marketing.  Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel Apps - Marketing, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Siebel Apps - Marketing accessible data as well as  unauthorized read access to a subset of Siebel Apps - Marketing accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).","summary":"An unauthenticated attacker over HTTP can read and modify a subset of data in Siebel Apps - Marketing, but only after a person other than the attacker takes an action. The flaw also has a scope change, so it may affect other products beyond Siebel Marketing.","severity":"medium","cvss":6.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["enterprise-crm","http","oracle-crm","siebel","vendor"],"not_affected_if":["not-running-siebel-marketing","outside-affected-versions"],"how_to_check":"- Confirm whether Oracle Siebel CRM Marketing is in use and which release it runs, against the affected range 17.0-26.9 given in the source\n- Check the release with the Oracle Siebel patch documentation for your installed version (unknown exact command)","fix":"- Apply the Oracle Critical Patch Update fix for Siebel Apps - Marketing that covers releases 17.0-26.9 (exact patch version unknown from sources)\n- Follow Oracle's advisory for the fixed release number (unknown from sources)","status":"open","published_at":"2026-10-20T22:17:46+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","triaged_at":"2026-10-25T04:03:58+00:00","updated_at":"2026-10-25T04:03:58+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:03:58Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Siebel Apps - Marketing that covers releases 17.0-26.9 (exact patch version unknown from sources)\n- Follow Oracle's advisory for the fixed release number (unknown from sources)","reach":"network","title":"Oracle Siebel CRM Marketing: unauthenticated HTTP flaw exposes and alters some data","impact":"medium","summary":"An unauthenticated attacker over HTTP can read and modify a subset of data in Siebel Apps - Marketing, but only after a person other than the attacker takes an action. The flaw also has a scope change, so it may affect other products beyond Siebel Marketing.","category":"vendor","nicknames":[],"who_cares":["siebel","oracle-crm","enterprise-crm","http"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker can alter or delete some Siebel Marketing data and read a subset","analyst_note":"Confirm the exact fixed Siebel Marketing patch and advisory link from Oracle's Critical Patch Update, since the NVD text gives only the affected range.","how_to_check":"- Confirm whether Oracle Siebel CRM Marketing is in use and which release it runs, against the affected range 17.0-26.9 given in the source\n- Check the release with the Oracle Siebel patch documentation for your installed version (unknown exact command)","needs_analyst":true,"not_affected_if":["not-running-siebel-marketing","outside-affected-versions"],"who_is_affected":"Organizations running Oracle Siebel CRM Marketing in the affected release range 17.0-26.9 with HTTP-reachable access are exposed. Installations not running Siebel Marketing in that range can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00068,"input_tokens":3562,"output_tokens":647,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101391':15A,18A '-2026':14A,17A '-26.9':93C '/av':189C '17.0':92C '3.1':177C,188C '6.1':180C 'access':102C,152C,159C,166C,174C 'action':56B 'addit':135C 'affect':67B,90C 'allow':97C 'also':59B 'alter':10A 'app':43B,77C,108C,129C,157C,172C 'attack':30B,53B,99C,111C,121C,131C,140C 'base':178C 'beyond':70B 'c/c':194C 'chang':63B,138C 'compon':84C 'compromis':106C 'confidenti':181C 'crm':3A,21B,25B,83C 'cve':13A,16A 'cvss':176C,185C,187C 'data':12A,40B,160C,175C 'delet':151C 'easili':94C 'enterpris':20B 'enterprise-crm':19B 'exploit':95C 'expos':8A 'flaw':7A,58B 'http':6A,22B,32B,104C 'human':113C 'impact':134C,184C 'insert':149C 'integr':183C 'interact':114C 'l/a':196C 'l/i':195C 'l/pr':191C 'market':4A,44B,72B,78C,85C,109C,130C,158C,173C 'may':66B,132C 'modifi':36B 'n':197C 'n/ac':190C 'n/ui':192C 'network':101C 'oracl':1A,24B,81C 'oracle-crm':23B 'person':49B,117C 'product':69B,79C,136C 'r/s':193C 'read':34B,165C 'requir':112C 'result':145C 'scope':62B,137C 'score':179C 'siebel':2A,26B,42B,71B,76C,82C,107C,128C,156C,171C 'signific':133C 'subset':38B,169C 'success':110C,139C 'support':86C 'take':54B 'unauthent':5A,29B,98C 'unauthor':147C,164C 'updat':148C 'vector':186C 'vendor':27B 'version':87C 'via':103C 'vulner':73C,96C,125C,143C 'well':162C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle Siebel CRM Marketing in the affected release range 17.0-26.9 with HTTP-reachable access are exposed. Installations not running Siebel Marketing in that range can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:17:46+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-101391","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101391","severity":null,"published_at":"2026-10-20T22:17:46+00:00","modified_at":"2026-10-21T18:45:11+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","fetched_at":"2026-10-23T22:28:58+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"}