CVE-2026-91376
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Cross-Site Request Forgery in Primavera P6 Enterprise Project Portfolio Management

Publication date: 2026-10-20

Last updated on: 2026-10-21

Assigner: Oracle

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. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Primavera P6 Enterprise Project Portfolio Management, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Primavera P6 Enterprise Project Portfolio Management accessible data as well as unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N).

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Meta Information

Published
2026-10-20
Last Modified
2026-10-21
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-91376
EUVD
EUVD-2026-106630

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This is a vulnerability in Oracle Primavera P6 Enterprise Project Portfolio Management affecting versions 21.12.0.0-21.12.21.9 through 25.12.0-25.12.8. It allows a low-privileged attacker with network access to potentially compromise the system through HTTP. Exploitation requires human interaction from another user and could lead to unauthorized data access or modification.

Detection Guidance

Detection requires checking for vulnerable versions of Primavera P6 Enterprise Project Portfolio Management. Verify installed versions against affected ranges: 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, or 25.12.0-25.12.8. Check application logs for unusual HTTP access patterns or unauthorized data access attempts.

Impact Analysis

If exploited, this vulnerability could allow attackers to gain unauthorized access to critical data or modify existing data in Primavera P6. This may disrupt project management operations and lead to data breaches or integrity issues in project planning and execution.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of critical project management data, which may include sensitive personal or health information. Such breaches could violate GDPR or HIPAA requirements for data confidentiality and integrity.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update immediately. If patching is not possible, restrict network access to the Primavera P6 application via firewall rules. Disable unnecessary HTTP interfaces and enforce strict authentication for all users. Monitor for suspicious activity in application logs.

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