Quick answers
- Is CVE-2026-91506 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91506 being exploited in the wild.
- How severe is CVE-2026-91506?
- High severity, with a CVSS score of 8.1, published 20 October 2026.
- Which products and versions are affected?
- Oracle E-Business Suite Workflow 12.2.3 through 12.2.15.
- Is there a fix for CVE-2026-91506?
- 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-2026-91506 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-91506?
- Check whether you run Oracle E-Business Suite Workflow 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
The vulnerability exists in the Workflow Notification Mailer component of Oracle E-Business Suite and allows unauthenticated remote attackers with network access via HTTP to achieve code execution and complete system compromise. The vulnerability is difficult to exploit but has high impact across confidentiality, integrity, and availability when successfully executed.
Affected products
- Oracle E-Business Suite Workflow 12.2.3 through 12.2.15
Timeline
- 2026-10-20: disclosed