{"id":"CVE-2026-91422","kind":"vulnerability","aliases":["CVE-2026-91422"],"related":[],"title":"Oracle Siebel CRM Deployment: low-privilege HTTP flaw allows critical data changes","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. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Deployment.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Siebel CRM Deployment 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 Deployment's Server Infrastructure component has a flaw reachable over HTTP by a low-privileged user. A successful attack can create, delete or modify data the product can access, per the NVD description (CVSS 5.3, integrity impact only).","severity":"medium","cvss":5.3,"epss":0.00247,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["crm","oracle-siebel","other","self-hosted"],"not_affected_if":["unaffected-version"],"how_to_check":"- Confirm the installed Siebel CRM Deployment version; the sources say versions 17.0 through 26.9 are affected.\n- Check Oracle's Critical Patch Update advisory for the patched Siebel build: unknown from the sources.","fix":"- Apply the Oracle Siebel CRM Deployment patch that Oracle lists for this CVE: exact patched version unknown from the sources.","status":"open","published_at":"2026-10-20T22:20:45+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T04:22:36+00:00","updated_at":"2026-10-25T12:38:52+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-25T04:22:36Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Siebel CRM Deployment patch that Oracle lists for this CVE: exact patched version unknown from the sources.","reach":"network","title":"Oracle Siebel CRM Deployment: low-privilege HTTP flaw allows critical data changes","impact":"medium","summary":"Oracle Siebel CRM Deployment's Server Infrastructure component has a flaw reachable over HTTP by a low-privileged user. A successful attack can create, delete or modify data the product can access, per the NVD description (CVSS 5.3, integrity impact only).","category":"other","nicknames":[],"who_cares":["oracle-siebel","crm","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Low-privileged user alters or deletes critical CRM data","analyst_note":"Find Oracle's CPU advisory for CVE-2026-91422 to get the patched Siebel version and any workaround; the NVD entry alone does not give them.","how_to_check":"- Confirm the installed Siebel CRM Deployment version; the sources say versions 17.0 through 26.9 are affected.\n- Check Oracle's Critical Patch Update advisory for the patched Siebel build: unknown from the sources.","needs_analyst":true,"not_affected_if":["unaffected-version"],"who_is_affected":"Organizations running Oracle Siebel CRM Deployment in the affected version range that expose its server infrastructure over HTTP to users with low-privilege accounts. The sources do not say which deployment settings make a system exposed, so teams outside the 17.0 to 26.9 range can likely skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000649,"input_tokens":3471,"output_tokens":604,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-26.9':90C '-91422':16A,19A '/av':144C '17.0':89C '3.1':134C,143C '5.3':66B,137C 'access':60B,101C,122C,131C 'affect':87C 'allow':10A,95C 'attack':50B,98C,110C 'base':135C 'chang':13A 'compon':35B,80C 'compromis':105C 'creat':52B 'creation':118C 'critic':11A,124C 'crm':3A,20B,30B,73C,79C,107C,129C 'cve':14A,17A 'cvss':65B,133C,140C,142C 'data':12A,56B,125C,132C 'delet':53B,119C 'deploy':4A,31B,74C,108C,130C 'descript':64B 'difficult':91C 'exploit':93C 'flaw':9A,38B 'h/a':151C 'h/pr':146C 'host':27B 'http':8A,41B,103C 'impact':68B,139C 'infrastructur':34B,82C 'integr':67B,138C 'l/ui':147C 'low':6A,45B,96C 'low-privileg':5A,44B 'modif':121C 'modifi':55B 'n':152C 'n/ac':145C 'n/i':150C 'n/s':148C 'network':100C 'nvd':63B 'oracl':1A,22B,28B,77C 'oracle-siebel':21B 'per':61B 'privileg':7A,46B,97C 'product':58B,75C 'reachabl':39B 'result':115C 'score':136C 'self':26B 'self-host':25B 'server':33B,81C 'siebel':2A,23B,29B,72C,78C,106C,128C 'success':49B,109C 'support':83C 'u/c':149C 'unauthor':117C 'user':47B 'vector':141C 'version':84C 'via':102C 'vulner':69C,94C,113C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle Siebel CRM Deployment in the affected version range that expose its server infrastructure over HTTP to users with low-privilege accounts. The sources do not say which deployment settings make a system exposed, so teams outside the 17.0 to 26.9 range can likely skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:45+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-2026-91422","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91422","severity":null,"published_at":"2026-10-20T22:20:45+00:00","modified_at":"2026-10-23T21:17:26+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-2026-91422","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91422","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"}