CVE-2026-83146: Oracle Siebel CRM End User cross-site scripting in Open UI

CVE-2026-83146 · Severity: high · CVSS 7.7 · Published 2026-09-15

Oracle Siebel CRM End User is a customer relationship management system used by enterprises to manage customer interactions and data. A cross-site scripting vulnerability in the Open UI component allows a low-privileged attacker to trick users into performing actions that could lead to unauthorized access, modification, or deletion of critical customer data, with potential impact extending beyond Siebel to other connected systems.

Technologies: Oracle Siebel CRM End User. Vendors: Oracle.

Quick answers

Is CVE-2026-83146 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-83146 being exploited in the wild.
How severe is CVE-2026-83146?
High severity, with a CVSS score of 7.7, published 15 September 2026.
Which products and versions are affected?
Oracle Siebel CRM End User 17.0 through 26.7.
Is there a fix for CVE-2026-83146?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-83146 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-83146?
Check whether you run Oracle Siebel CRM End User at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a cross-site scripting (XSS) vulnerability in the Open UI component of Oracle Siebel CRM End User. The vulnerability requires network access via HTTP and can be exploited by a low-privileged attacker, but requires user interaction (specifically human interaction from someone other than the attacker) to succeed. The attack has a high complexity (AC:H) rating. Successful exploitation enables unauthorized access to, creation, deletion, or modification of critical data accessible through Siebel CRM End User, and may impact other connected products due to scope change. Patches are available for supported versions 17.0 through 26.7.

Affected products

  • Oracle Siebel CRM End User 17.0 through 26.7

Timeline

  • 2026-09-15: disclosed

References

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