CVE-2026-91430

Unauthenticated HTTP Authentication Bypass in Oracle Siebel Apps – Financial Services Enables Unauthorized Data Access

Published Oct 20, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Vulnerability in the Siebel Apps - Financial Services product of Oracle Siebel CRM (component: Financial Accounts). 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 Apps - Financial Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel Apps - Financial Services accessible data as well as unauthorized update, insert or delete access to some of Siebel Apps - Financial Services accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Oracle siebel Crm
CPEs cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*
Vendors & Products Oracle siebel Crm
Type Values Removed Values Added
Title Unauthenticated HTTP Authentication Bypass in Oracle Siebel Apps – Financial Services Enables Unauthorized Data Access
Type Values Removed Values Added
Title Siebel Apps – Financial Services Unauthenticated HTTP Data Access
Weaknesses CWE-287
Type Values Removed Values Added
Weaknesses CWE-306
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Siebel Apps – Financial Services Unauthenticated HTTP Data Access
Weaknesses CWE-287
Type Values Removed Values Added
Description Vulnerability in the Siebel Apps - Financial Services product of Oracle Siebel CRM (component: Financial Accounts). 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 Apps - Financial Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel Apps - Financial Services accessible data as well as unauthorized update, insert or delete access to some of Siebel Apps - Financial Services accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N).
First Time appeared Oracle
Oracle siebel Apps - Financial Services
CPEs cpe:2.3:a:oracle:siebel_apps_-_financial_services:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle siebel Apps - Financial Services
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
oracle
Published
Updated
Oct 23, 2026, 8:15 PM
Reserved
Sep 14, 2026, 10:10 PM
Status
Analyzed
Published
Oct 20, 2026, 10:20 PM
Modified
Nov 4, 2026, 4:54 PM