---
id: CVE-2026-91428
title: >-
  Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM
  (component: Open UI)
summary: >-
  Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM
  (component: Open UI).  Supported versions that are affected are 17.0-26.9.
  Easily exploitable vulnerability allows unauthenticated attacker with network
  access via HTT…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cvssSource: cna
vendor: Oracle Corporation
product: Siebel CRM End User
affected:
  - siebel_crm_end_user >= 17.0 <= 26.9
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:25:54.815Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91428'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.758Z'
---

## Overview

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM End User.  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Siebel CRM End User accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).

## Affected

- `siebel_crm_end_user >= 17.0 <= 26.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.