Live › vulnerability › CVE-2026-91389
Go to dashboardOracle Siebel CRM End User has a flaw in its Open UI component that lets an attacker with a low-privilege account over HTTP read and modify some data the application can access. Exploitation needs a victim to take an action, and the impact can extend beyond Siebel itself.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Organizations running Oracle Siebel CRM End User in the affected version range 17.0-26.9 with the Open UI component exposed over HTTP. Teams not running Siebel, or running a version outside that range, can skip it.
No product ranges from the sources yet.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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).
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