---
id: "CVE-2026-87356"
kind: "vulnerability"
aliases: ["CVE-2026-87356"]
title: "Oracle E-Business Suite: Valid Session flaw lets low-privileged users take over"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["enterprise-apps", "oracle-ebs", "package", "self-hosted"]
not_affected_if: ["unsupported-version-range"]
published_at: "2026-10-20T22:20:13+00:00"
first_seen_at: "2026-10-23T21:57:25+00:00"
updated_at: "2026-10-25T03:08:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87356", "first_seen_at": "2026-10-23T21:57:25+00:00"}]
---

# Oracle E-Business Suite: Valid Session flaw lets low-privileged users take over

Oracle E-Business Suite's Applications Platform Engineering component, versions 12.2.3 through 12.2.15, has a flaw in its Valid Session handling. An attacker with a low-privileged logon to the host where it runs can take over the component, with full confidentiality, integrity and availability impact.

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

## How to check

- Check the installed E-Business Suite release version against `12.2.3` through `12.2.15` in the Oracle E-Business Suite environment
- unknown for any other check, the sources do not say

## Fix

- Apply the Oracle Critical Patch Update fix for Oracle E-Business Suite Applications Platform Engineering, moving past `12.2.15` (exact patch unknown from the sources)

## Timeline

- 2026-10-23T21:57:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87356

## From the sources

Vulnerability in the Applications Platform Engineering product of Oracle E-Business Suite (component: Valid Session).  Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Applications Platform Engineering executes to compromise Applications Platform Engineering.  Successful attacks of this vulnerability can result in takeover of Applications Platform Engineering. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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_