Vulnerability in Primavera P6 Project Management by Oracle Construction
CVE-2026-91399

4.3MEDIUM

Key Information:

Vendor

Oracle
Status
Primavera P6 Enterprise Project Portfolio Management
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91399?

A vulnerability exists in Oracle's Primavera P6 Enterprise Project Portfolio Management software, specifically within its Web Access component. This flaw can be exploited by low privileged attackers who have network access via HTTP. Successful exploitation allows unauthorized users to perform updates, insert records, or delete data, thereby compromising the integrity of the application's data. Affected versions include specific releases from 21.12 through 25.12, emphasizing the importance of timely updates and security patches to mitigate potential risks.

Affected Version(s)

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

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.