# CVE-2026-91496: Oracle E-Business Suite Workflow Notification Mailer privilege escalation

Source: https://junglewise.ai/threats/cve-2026-91496-vulnerability-in-the-workflow-product-of-oracle-e-business-suite  
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-2026-91496 · Severity: high · CVSS 7.5 · Published 2026-10-20

Oracle E-Business Suite is a comprehensive business management software used by enterprises to run operations. The Workflow Notification Mailer component, which handles email notifications within workflows, contains a vulnerability that allows a low-privileged user with network access to take over the entire Workflow system. Successful exploitation grants an attacker unauthorized administrative control and access to sensitive workflow data.

Technologies: [Oracle E-Business Suite](https://junglewise.ai/threats/technologies/e-business-suite). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91496 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91496 being exploited in the wild.

**How severe is CVE-2026-91496?** High severity, with a CVSS score of 7.5, published 20 October 2026.

**Which products and versions are affected?** Oracle E-Business Suite 12.2.3–12.2.15.

**Is there a fix for CVE-2026-91496?** 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-2026-91496 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-91496?** Check whether you run Oracle E-Business Suite 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

A difficult-to-exploit vulnerability in the Workflow Notification Mailer component of Oracle E-Business Suite allows authenticated network attackers to achieve privilege escalation over HTTP. The attack requires low-level privileges and no user interaction, resulting in complete compromise of the Workflow application including confidentiality, integrity, and availability impacts.

## Affected products

- Oracle E-Business Suite 12.2.3–12.2.15

## Timeline

- 2026-10-20: disclosed

## References

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

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- [Oracle E-Business Suite Workflow Notification Mailer remote code execution](https://junglewise.ai/threats/cve-2026-101809-vulnerability-in-the-workflow-product-of-oracle-e-business-suite)