---
id: "CVE-2026-101389"
kind: "vulnerability"
aliases: ["CVE-2026-101389"]
title: "Oracle PeopleSoft PeopleTools: unauthenticated HTTP request can crash Business Interlink"
severity: "medium"
cvss: 5.9
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["oracle", "peoplesoft", "peopletools", "self-hosted", "vendor"]
not_affected_if: ["network-restricted", "no-business-interlink", "unsupported-version"]
published_at: "2026-10-20T22:17:46+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T04:08:40+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101389", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# Oracle PeopleSoft PeopleTools: unauthenticated HTTP request can crash Business Interlink

Oracle PeopleSoft Enterprise PeopleTools 8.61 through 8.63 has a flaw in the Business Interlink component. An unauthenticated remote attacker who can reach it over HTTP can cause a hang or repeatable crash, a denial of service, but cannot read or change data.

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

## How to check

- Check the installed PeopleTools version against the affected range `8.61` to `8.63`
- Confirm whether Business Interlink is deployed and reachable over HTTP from untrusted networks
- Review the Oracle Critical Patch Update advisory for the exact patch list (unknown from these sources)

## Fix

- Apply the Oracle Critical Patch Update fix for PeopleSoft Enterprise PeopleTools 8.61 to 8.63 (exact patch id unknown from these sources)
- Restrict HTTP access to Business Interlink endpoints to trusted networks until patched

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101389

## From the sources

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Business Interlink).  Supported versions that are affected are 8.61-8.63. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 5.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

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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_