---
id: "CVE-2026-101490"
kind: "vulnerability"
aliases: ["CVE-2026-101490"]
title: "Oracle PeopleSoft PeopleTools Fluid Core: unauthenticated XSS-style data change via HTTP"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["erp", "oracle", "peoplesoft", "peopletools", "vendor"]
not_affected_if: ["unsupported-version"]
published_at: "2026-10-20T22:17:58+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-25T04:03:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101490", "first_seen_at": "2026-10-23T21:57:22+00:00"}]
---

# Oracle PeopleSoft PeopleTools Fluid Core: unauthenticated XSS-style data change via HTTP

A flaw in the Fluid Core component of Oracle PeopleSoft PeopleTools 8.61 through 8.63 lets an unauthenticated network attacker reach PeopleSoft data over HTTP when a user takes an action. The sources say an attacker can read a subset of data and change or delete some accessible data, with CVSS 6.1 and scope change.

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

## How to check

- Check the installed PeopleTools release in the PeopleSoft environment; the sources name 8.61 to 8.63 as affected.
- Confirm against Oracle's Critical Patch Update advisory for the patch level in use; the sources do not list the patch identifiers.

## Fix

- Apply the Oracle Critical Patch Update fix for PeopleSoft Enterprise PeopleTools 8.61 to 8.63; the exact patch number is unknown from the sources.

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101490

## From the sources

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Fluid Core).  Supported versions that are affected are 8.61-8.63. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools.  Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in PeopleSoft Enterprise PeopleTools, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of PeopleSoft Enterprise PeopleTools accessible data as well as  unauthorized read access to a subset of PeopleSoft Enterprise PeopleTools accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

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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_