CVE-2026-91390: Medium severity Oracle Siebel CRM End User vulnerability
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 low privileged attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel CRM End User, 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 CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
Deployments running the Open UI component of Oracle Siebel CRM End User in supported versions 17.0 through 26.9 are affected. Exploitation is possible remotely over HTTP.
What does an attacker need to exploit it?
The attacker needs low-privileged access and network access to the affected application over HTTP. Exploitation also requires interaction by a person other than the attacker.
What could a successful attack allow?
A successful attack can allow unauthorized read access to a subset of accessible data and unauthorized update, insert, or delete operations on some accessible data. The impact may also significantly affect additional products because the vulnerability has scope change.