---
id: "CVE-2026-91553"
kind: "vulnerability"
aliases: ["CVE-2026-91553"]
title: "Oracle PeopleSoft FIN Product Configurator Brazil: low-privilege users can alter data"
severity: "medium"
cvss: 4.4
epss: 0.00103
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["erp", "on-prem", "oracle", "peoplesoft", "vendor"]
not_affected_if: ["no-brazil-configurator-module", "other-peoplesoft-versions"]
published_at: "2026-10-20T22:20:58+00:00"
first_seen_at: "2026-10-23T21:57:27+00:00"
updated_at: "2026-10-25T12:38:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91553", "first_seen_at": "2026-10-23T21:57:27+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91553", "first_seen_at": "2026-10-25T12:38:51+00:00"}]
---

# Oracle PeopleSoft FIN Product Configurator Brazil: low-privilege users can alter data

Oracle PeopleSoft Enterprise FIN Product Configurator Brazil 9.1 has a flaw in its Product Configurator component. A low-privileged user with logon to the infrastructure can make unauthorized changes to some data and partly disrupt the service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Confirm whether PeopleSoft Enterprise FIN Product Configurator Brazil `9.1` is deployed
- Check the installed PeopleSoft patch level against Oracle's advisory (unknown from sources)

## Fix

- Apply the Oracle Critical Patch Update fix for PeopleSoft Enterprise FIN Product Configurator Brazil (patch identifier unknown from sources)

## Timeline

- 2026-10-23T21:57:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91553
- 2026-10-25T12:38:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91553

## From the sources

Vulnerability in the PeopleSoft Enterprise FIN Product Configurator Brazil product of Oracle PeopleSoft (component: Product Configurator).   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 Product Configurator Brazil executes to compromise PeopleSoft Enterprise FIN Product Configurator Brazil.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of PeopleSoft Enterprise FIN Product Configurator Brazil accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of PeopleSoft Enterprise FIN Product Configurator 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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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_