CVE-2026-91559

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Privilege Escalation in PeopleSoft FIN Manufacturing Brazil

Publication date: 2026-10-20

Last updated on: 2026-10-26

Assigner: Oracle

Description

Vulnerability in the PeopleSoft Enterprise FIN Manufacturing Brazil product of Oracle PeopleSoft (component: Integration). The supported version that is affected is 9.1. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where PeopleSoft Enterprise FIN Manufacturing Brazil executes to compromise PeopleSoft Enterprise FIN Manufacturing Brazil. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of PeopleSoft Enterprise FIN Manufacturing Brazil accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of PeopleSoft Enterprise FIN Manufacturing Brazil. CVSS 3.1 Base Score 4.4 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).

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Meta Information

Published

2026-10-20

Last Modified

2026-10-26

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91559

EUVD

EUVD-2026-106783

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	PeopleSoft Enterprise FIN Manufacturing Brazil	9.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle PeopleSoft Enterprise FIN Manufacturing Brazil version 9.1. It allows a low-privileged attacker with system access to exploit the integration component and potentially modify or delete data or disrupt service partially.

Detection Guidance

Detection requires checking for vulnerable versions of PeopleSoft Enterprise FIN Manufacturing Brazil 9.1. Verify installed versions against Oracle's official documentation and apply patches if affected. No specific commands are provided in the context.

Impact Analysis

An attacker could gain unauthorized access to manipulate financial data or cause partial system outages, leading to data integrity issues or service disruptions in the PeopleSoft environment.

Compliance Impact

This vulnerability allows unauthorized data modification and partial denial of service, which could lead to violations of data integrity and availability requirements in GDPR and HIPAA. Unauthorized access to sensitive financial data may also impact compliance with these regulations.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for PeopleSoft Enterprise FIN Manufacturing Brazil version 9.1 to address the vulnerability. Ensure proper access controls are enforced to limit low-privileged user access to the infrastructure where the component executes.

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