CVE-2026-91441

Analyzed Analyzed - Analysis Complete

Cross-Site Scripting in Siebel Apps Customer Order Management

Publication date: 2026-10-20

Last updated on: 2026-11-04

Assigner: Oracle

Description

Vulnerability in the Siebel Apps - Customer Order Management product of Oracle Siebel CRM (component: Order Management). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel Apps - Customer Order Management. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel Apps - Customer Order Management, 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 - Customer Order Management accessible data as well as unauthorized read access to a subset of Siebel Apps - Customer Order Management accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Siebel Apps - Customer Order Management. CVSS 3.1 Base Score 6.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-04

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91441

EUVD

EUVD-2026-106691

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	siebel_crm	From 17.0 (inc) to 26.9 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM's Customer Order Management product affecting versions 17.0 to 26.9. It allows a low-privileged attacker with network access via HTTP to potentially compromise the system. Exploitation requires human interaction from someone other than the attacker and may impact additional products.

Detection Guidance

Detection of this vulnerability requires checking for affected versions of Oracle Siebel Apps - Customer Order Management (versions 17.0-26.9). Verify the installed version of the software on your system. If the version falls within this range, the system is potentially vulnerable.

Impact Analysis

An attacker could gain unauthorized access to modify, insert, or delete data in Siebel Apps - Customer Order Management. They could also read some data and cause partial denial of service, disrupting normal operations.

Compliance Impact

This vulnerability could lead to unauthorized access, modification, or deletion of sensitive data, which may violate GDPR's data integrity and confidentiality requirements or HIPAA's safeguards for protected health information. The partial denial of service could also disrupt compliance with availability standards.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Siebel Apps - Customer Order Management to address the vulnerability. Ensure all affected versions (17.0-26.9) are updated. Monitor Oracle's security advisories for patches and follow their recommended mitigation steps.

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EPSS Chart

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