CVE-2026-91399

Medium

Description

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).

SeverityMedium
CVSS4.3
Exploit probability—
ProductPrimavera P6 Enterprise Project Portfolio Management
PublishedOct 20, 2026
First seenOct 20, 2026

How to fix

Affected products

ProductAffected versionsFixed in
Oracle Corporation Primavera P6 Enterprise Project Portfolio Management21.12.0.0 ≤ v ≤ 21.12.21.9, 22.12.0.0 ≤ v ≤ 22.12.21.4, 23.12.0 ≤ v ≤ 23.12.20, 24.12.0 ≤ v ≤ 24.12.16, 25.12.0 ≤ v ≤ 25.12.8—

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