{"id":"CVE-2026-91369","kind":"vulnerability","aliases":["CVE-2026-91369"],"related":[],"title":"Oracle Siebel CRM Cloud: low-privilege users can alter critical data","description":"Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager).  Supported versions that are affected are 22.3-26.9. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Cloud Applications.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 5.3 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N).","summary":"Oracle Siebel CRM Cloud Applications, in the Siebel Cloud Manager component, has a flaw that lets a low-privileged user reached over HTTP create, delete or modify data. The sources say the attack is hard to pull off and affects integrity, not confidentiality or availability.","severity":"medium","cvss":5.3,"epss":0.0023,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cloud","crm","oracle","siebel","vendor"],"not_affected_if":["not-using-siebel-cloud"],"how_to_check":"- Check whether your Siebel CRM Cloud Applications version falls within 22.3 to 26.9 in Oracle's advisory or with your Oracle account contact\n- unknown for any local command, since the sources do not describe one","fix":"- Apply the Oracle Siebel CRM Cloud Applications patch or update for the affected release, as listed in Oracle's Critical Patch Update\n- unknown for the exact patched version, since the sources do not name it","status":"open","published_at":"2026-10-20T22:20:39+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T04:22:45+00:00","updated_at":"2026-10-25T12:38:52+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:22:45Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Siebel CRM Cloud Applications patch or update for the affected release, as listed in Oracle's Critical Patch Update\n- unknown for the exact patched version, since the sources do not name it","reach":"internet","title":"Oracle Siebel CRM Cloud: low-privilege users can alter critical data","impact":"medium","summary":"Oracle Siebel CRM Cloud Applications, in the Siebel Cloud Manager component, has a flaw that lets a low-privileged user reached over HTTP create, delete or modify data. The sources say the attack is hard to pull off and affects integrity, not confidentiality or availability.","category":"vendor","nicknames":[],"who_cares":["siebel","oracle","crm","cloud"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker alters or deletes critical CRM data through the web interface","analyst_note":"Find Oracle's Critical Patch Update entry for CVE-2026-91369 to confirm the patched version and whether self-managed Siebel is affected.","how_to_check":"- Check whether your Siebel CRM Cloud Applications version falls within 22.3 to 26.9 in Oracle's advisory or with your Oracle account contact\n- unknown for any local command, since the sources do not describe one","needs_analyst":true,"not_affected_if":["not-using-siebel-cloud"],"who_is_affected":"Organizations running Oracle Siebel CRM Cloud Applications in the affected version range where low-privileged accounts can reach the HTTP interface. Teams that do not use hosted Siebel CRM Cloud Applications can skip it. The sources do not say whether self-managed Siebel installs are affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000664,"input_tokens":3489,"output_tokens":630,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-26.9':93C '-91369':15A,18A '/av':149C '22.3':92C '3.1':139C,148C '5.3':142C 'access':104C,126C,136C 'affect':64B,90C 'allow':98C 'alter':10A 'applic':28B,76C,112C,135C 'attack':57B,101C,114C 'avail':69B 'base':140C 'cloud':4A,19B,27B,32B,75C,84C,111C,134C 'compon':34B,82C 'compromis':108C 'confidenti':67B 'creat':48B 'creation':122C 'critic':11A,128C 'crm':3A,20B,26B,74C,81C,110C,133C 'cve':13A,16A 'cvss':138C,145C,147C 'data':12A,52B,129C,137C 'delet':49B,123C 'difficult':94C 'exploit':96C 'flaw':37B 'h/a':156C 'h/pr':151C 'hard':59B 'http':47B,106C 'impact':144C 'integr':65B,143C 'l/ui':152C 'let':39B 'low':6A,42B,99C 'low-privileg':5A,41B 'manag':33B,85C 'modif':125C 'modifi':51B 'n':157C 'n/ac':150C 'n/i':155C 'n/s':153C 'network':103C 'oracl':1A,21B,24B,79C 'privileg':7A,43B,100C 'product':77C 'pull':61B 'reach':45B 'result':119C 'say':55B 'score':141C 'siebel':2A,22B,25B,31B,73C,80C,83C,109C,132C 'sourc':54B 'success':113C 'support':86C 'u/c':154C 'unauthor':121C 'user':8A,44B 'vector':146C 'vendor':23B 'version':87C 'via':105C 'vulner':70C,97C,117C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle Siebel CRM Cloud Applications in the affected version range where low-privileged accounts can reach the HTTP interface. Teams that do not use hosted Siebel CRM Cloud Applications can skip it. The sources do not say whether self-managed Siebel installs are affected.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:39+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91369","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91369","severity":null,"published_at":"2026-10-20T22:20:39+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-2026-91369","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91369","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"}