# CVE-2026-91356: Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland privilege escalation

Source: https://junglewise.ai/threats/cve-2026-91356-vulnerability-in-the-peoplesoft-enterprise-hcm-global-payroll  
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-2026-91356 · Severity: medium · CVSS 4.2 · Published 2026-10-20

Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland is a human resources and payroll management system used by organizations to process employee compensation and benefits, particularly for Swiss operations. A vulnerability allows a high-privileged attacker with local infrastructure access to read sensitive payroll and employee data, modify or delete records, and partially disrupt the system's availability. This could expose confidential employee information and corrupt critical payroll records.

Technologies: [Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland](https://junglewise.ai/threats/technologies/peoplesoft-enterprise-hcm-global-payroll-switzerland). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91356 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91356 being exploited in the wild.

**How severe is CVE-2026-91356?** Medium severity, with a CVSS score of 4.2, published 20 October 2026.

**Which products and versions are affected?** Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland 9.2.

**Is there a fix for CVE-2026-91356?** 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-2026-91356 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-91356?** Check whether you run Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland 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 privilege escalation vulnerability exists in Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland version 9.2 in the Global Payroll for Switzerland component. The vulnerability requires high privileges and local access to the infrastructure running the product, but has low attack complexity. Successful exploitation results in unauthorized read, update, insert, and delete access to payroll data and partial denial of service.

## Affected products

- Oracle PeopleSoft Enterprise HCM Global Payroll Switzerland 9.2

## 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 PeopleSoft Enterprise HCM takeover in Global Payroll Switzerland](https://junglewise.ai/threats/cve-2026-61235-oracle-peoplesoft-enterprise-hcm-takeover-in-global-payroll)
- [Oracle PeopleSoft Enterprise HCM data compromise in Global Payroll Switzerland](https://junglewise.ai/threats/cve-2026-60665-oracle-peoplesoft-enterprise-hcm-data-compromise-in-global)