# CVE-2026-91376: Oracle Primavera P6 Enterprise Project Portfolio Management CSRF in Web Access

Source: https://junglewise.ai/threats/cve-2026-91376-vulnerability-in-the-primavera-p6-enterprise-project-portfolio  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-91376 · Severity: medium · CVSS 6.5 · Published 2026-10-20

Oracle Primavera P6 Enterprise Project Portfolio Management is a web-based system used to manage large construction and engineering projects. This vulnerability allows a low-privileged user to trick another user into performing unauthorized actions that could expose sensitive project data or modify project information, potentially disrupting critical business operations.

Technologies: [Oracle Primavera P6 Enterprise Project Portfolio Management](https://junglewise.ai/threats/technologies/primavera-p6-enterprise-project-portfolio-management). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91376 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91376 being exploited in the wild.

**How severe is CVE-2026-91376?** Medium severity, with a CVSS score of 6.5, published 20 October 2026.

**Which products and versions are affected?** Oracle Primavera P6 Enterprise Project Portfolio Management 21.12.0.0 through 21.12.21.9, 22.12.0.0 through 22.12.21.4, 23.12.0 through 23.12.20, 24.12.0 through 24.12.16, 25.12.0 through 25.12.8.

**Is there a fix for CVE-2026-91376?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-91376 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-91376?** Check whether you run Oracle Primavera P6 Enterprise Project Portfolio Management at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A CSRF (cross-site request forgery) or clickjacking vulnerability in the Web Access component allows a low-privileged attacker with network access to craft a malicious request that requires a different user to interact with it. Successful exploitation grants unauthorized read access to critical project data and limited write access to some data, with scope change indicating impact beyond the application itself.

## Affected products

- Oracle Primavera P6 Enterprise Project Portfolio Management 21.12.0.0 through 21.12.21.9, 22.12.0.0 through 22.12.21.4, 23.12.0 through 23.12.20, 24.12.0 through 24.12.16, 25.12.0 through 25.12.8

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle Primavera P6 Enterprise unauthorized data modification in Web Access](https://junglewise.ai/threats/cve-2026-91399-vulnerability-in-the-primavera-p6-enterprise-project-portfolio)
- [Oracle Primavera P6 EPPM unauthenticated compromise in Web Access](https://junglewise.ai/threats/cve-2017-3324-oracle-primavera-p6-eppm-unauthenticated-compromise-in-web-access)
- [Oracle Primavera P6 EPPM improper access control in Team Member](https://junglewise.ai/threats/cve-2017-3263-oracle-primavera-p6-eppm-improper-access-control-in-team-member)