# CVE-2026-91378: Oracle Siebel CRM Integration cross-site request forgery in Open Integration

Source: https://junglewise.ai/threats/cve-2026-91378-vulnerability-in-the-siebel-crm-integration-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-2026-91378 · Severity: medium · CVSS 6.1 · Published 2026-10-20

Oracle Siebel CRM Integration is a business application for customer relationship management. An attacker can trick a user into modifying or deleting customer data or reading sensitive information by sending a specially crafted request, even without direct authentication. The vulnerability could also impact other connected systems in the enterprise environment.

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

## Quick answers

**Is CVE-2026-91378 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91378 being exploited in the wild.

**How severe is CVE-2026-91378?** Medium severity, with a CVSS score of 6.1, published 20 October 2026.

**Which products and versions are affected?** Oracle Siebel CRM Integration 25.12 to 26.9.

**Is there a fix for CVE-2026-91378?** 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-2026-91378 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-91378?** Check whether you run Oracle Siebel CRM Integration 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 easily exploitable vulnerability in the Open Integration component of Siebel CRM Integration allows unauthenticated attackers to gain unauthorized data access via network/HTTP. The attack requires user interaction (likely a CSRF or similar social engineering vector) and has cross-scope impact on other products. Successful exploitation yields unauthorized read and write access to Siebel data.

## Affected products

- Oracle Siebel CRM Integration 25.12 to 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 Integration unauthorized data access via HTTP](https://junglewise.ai/threats/cve-2026-91377-vulnerability-in-the-siebel-crm-integration-product-of-oracle)
- [Oracle Siebel CRM Integration cross-site request forgery in EAI](https://junglewise.ai/threats/cve-2026-87338-vulnerability-in-the-siebel-crm-integration-product-of-oracle)
- [Oracle Siebel CRM Integration denial of service in EAI](https://junglewise.ai/threats/cve-2026-101508-vulnerability-in-the-siebel-crm-integration-product-of-oracle)
- [Oracle Siebel CRM Open Integration CSRF or XSS vulnerability](https://junglewise.ai/threats/cve-2026-101492-vulnerability-in-the-siebel-crm-integration-product-of-oracle)
- [Oracle Siebel CRM Integration authentication bypass in Open Integration](https://junglewise.ai/threats/cve-2026-83326-oracle-siebel-crm-integration-authentication-bypass-in-open)