# CVE-2026-83389: Oracle E-Business Suite HRMS (UK) authorization bypass in Internal Operations

Source: https://junglewise.ai/threats/cve-2026-83389-vulnerability-in-the-oracle-hrms-uk-product-of-oracle-e-business  
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-2026-83389 · Severity: medium · CVSS 5.4 · Published 2026-10-20

Oracle E-Business Suite HRMS (UK) is a human resources management system used by enterprises to manage employee data and payroll. A vulnerability in the Internal Operations component allows a low-privileged authenticated user with network access to read, modify, or delete sensitive HR data without proper authorization, requiring a victim to interact with a malicious link. Successful exploitation could expose or alter confidential employee and payroll information across the organization.

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

## Quick answers

**Is CVE-2026-83389 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83389 being exploited in the wild.

**How severe is CVE-2026-83389?** Medium severity, with a CVSS score of 5.4, published 20 October 2026.

**Which products and versions are affected?** Oracle E-Business Suite HRMS (UK) 12.2.3-12.2.15.

**Is there a fix for CVE-2026-83389?** 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-2026-83389 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-83389?** Check whether you run Oracle E-Business Suite HRMS (UK) 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

This is a cross-site request forgery or authorization bypass vulnerability in the Internal Operations component of Oracle HRMS (UK), accessible over HTTP. The attack requires low privilege network access and user interaction (UI:R), but achieves scope change, allowing unauthorized read and write access to HR data. The vulnerability affects versions 12.2.3 through 12.2.15 and impacts confidentiality and integrity of sensitive HR records.

## Affected products

- Oracle E-Business Suite HRMS (UK) 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)

## Related threats

- [Oracle E-Business Suite HRMS (UK) authorization bypass in Internal Operations](https://junglewise.ai/threats/cve-2026-83371-vulnerability-in-the-oracle-hrms-uk-product-of-oracle-e-business)