# CVE-2026-101394: Oracle Siebel Apps Marketing data integrity vulnerability

Source: https://junglewise.ai/threats/cve-2026-101394-vulnerability-in-the-siebel-apps-marketing-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-2026-101394 · Severity: medium · CVSS 5.3 · Published 2026-10-20

Oracle Siebel CRM's Marketing module contains a vulnerability that allows unauthenticated attackers over the network to modify, insert, or delete data without authorization. An attacker can exploit this vulnerability through HTTP without needing to authenticate, potentially compromising the integrity of marketing campaign data, customer information, and business records stored in the system.

Technologies: [Oracle Siebel Apps - Marketing](https://junglewise.ai/threats/technologies/siebel-apps-marketing). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101394 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101394 being exploited in the wild.

**How severe is CVE-2026-101394?** Medium severity, with a CVSS score of 5.3, published 20 October 2026.

**Which products and versions are affected?** Oracle Siebel Apps - Marketing 17.0-26.9.

**Is there a fix for CVE-2026-101394?** 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-2026-101394 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-101394?** Check whether you run Oracle Siebel Apps - Marketing 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 unauthenticated network-accessible vulnerability in the Oracle Siebel Apps Marketing component allows unauthorized update, insert, or delete operations on accessible data. The vulnerability is easily exploitable via HTTP with no authentication required, no complex configuration needed, and no user interaction necessary. An attacker gains write and delete access to application data, affecting integrity but not confidentiality or availability.

## Affected products

- Oracle Siebel Apps - Marketing 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

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