# CVE-2026-91422: Oracle Siebel CRM Deployment data integrity bypass in Server Infrastructure

Source: https://junglewise.ai/threats/cve-2026-91422-vulnerability-in-the-siebel-crm-deployment-product-of-oracle  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-91422 · Severity: medium · CVSS 5.3 · Published 2026-10-20

Oracle Siebel CRM Deployment is a customer relationship management platform used to manage business data and customer interactions. A vulnerability in its Server Infrastructure component allows low-privileged attackers with network access to bypass integrity protections and unauthorized modify, create, or delete critical business data. This could lead to data corruption, loss of customer information, or fraudulent transactions.

Technologies: [Oracle Siebel CRM Deployment](https://junglewise.ai/threats/technologies/siebel-crm-deployment). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91422 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91422 being exploited in the wild.

**How severe is CVE-2026-91422?** Medium severity, with a CVSS score of 5.3, published 20 October 2026.

**Which products and versions are affected?** Oracle Siebel CRM Deployment 17.0-26.9.

**Is there a fix for CVE-2026-91422?** 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-2026-91422 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-91422?** Check whether you run Oracle Siebel CRM Deployment 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

An integrity bypass vulnerability exists in the Server Infrastructure component of Siebel CRM Deployment, accessible via HTTP to low-privileged authenticated network users. Exploitation requires high complexity and can result in unauthorized modification, creation, or deletion of sensitive data without affecting confidentiality or availability. The vulnerability affects versions 17.0 through 26.9 and a fix is available in a later version per the October 2026 advisory.

## Affected products

- Oracle Siebel CRM Deployment 17.0-26.9

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle Siebel CRM unauthorized data access in Server Infrastructure](https://junglewise.ai/threats/cve-2026-91450-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM Deployment unauthorized data access via HTTP](https://junglewise.ai/threats/cve-2026-91449-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM Deployment unauthenticated data access](https://junglewise.ai/threats/cve-2026-91448-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM Deployment unauthorized data access](https://junglewise.ai/threats/cve-2026-91447-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM privilege escalation in Server Infrastructure](https://junglewise.ai/threats/cve-2026-91444-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)