---
id: CVE-2026-91399
title: >-
  Vulnerability in the Primavera P6 Enterprise Project Portfolio Management
  product of Oracle Construction and Engineering (component: Web Access)
summary: >-
  Vulnerability in the Primavera P6 Enterprise Project Portfolio Management
  product of Oracle Construction and Engineering (component: Web Access). 
  Supported versions that are affected are 21.12.0.0-21.12.21.9,
  22.12.0.0-22.12.21.4, 23.12…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
vendor: Oracle Corporation
product: Primavera P6 Enterprise Project Portfolio Management
affected:
  - >-
    primavera_p6_enterprise_project_portfolio_management >= 21.12.0.0 <=
    21.12.21.9
  - >-
    primavera_p6_enterprise_project_portfolio_management >= 22.12.0.0 <=
    22.12.21.4
  - primavera_p6_enterprise_project_portfolio_management >= 23.12.0 <= 23.12.20
  - primavera_p6_enterprise_project_portfolio_management >= 24.12.0 <= 24.12.16
  - primavera_p6_enterprise_project_portfolio_management >= 25.12.0 <= 25.12.8
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:25:46.002Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91399'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.775Z'
---

## Overview

Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access).  Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

## Affected

- `primavera_p6_enterprise_project_portfolio_management >= 21.12.0.0 <= 21.12.21.9`
- `primavera_p6_enterprise_project_portfolio_management >= 22.12.0.0 <= 22.12.21.4`
- `primavera_p6_enterprise_project_portfolio_management >= 23.12.0 <= 23.12.20`
- `primavera_p6_enterprise_project_portfolio_management >= 24.12.0 <= 24.12.16`
- `primavera_p6_enterprise_project_portfolio_management >= 25.12.0 <= 25.12.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.