# CVE-2026-73959: Oracle WebCenter Portal privilege escalation in Composer

Source: https://junglewise.ai/threats/cve-2026-73959-oracle-webcenter-portal-privilege-escalation-in-composer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-73959 · Severity: high · CVSS 8.8 · Published 2026-09-15

Oracle WebCenter Portal is a collaboration and content management platform used by enterprises to build portals and user experiences. A vulnerability in the Composer component allows a low-privileged authenticated user to gain complete control over the portal system, including the ability to read sensitive data, modify content, and disrupt service availability. An attacker with network access and valid credentials can exploit this without user interaction.

Technologies: [Oracle WebCenter Portal](https://junglewise.ai/threats/technologies/webcenter-portal). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-73959 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-73959 being exploited in the wild.

**How severe is CVE-2026-73959?** High severity, with a CVSS score of 8.8, published 15 September 2026.

**Which products and versions are affected?** Oracle WebCenter Portal 12.2.1.4.0, 14.1.2.0.0.

**Is there a fix for CVE-2026-73959?** 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-2026-73959 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-73959?** Check whether you run Oracle WebCenter Portal 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

This is a privilege escalation vulnerability in the Oracle WebCenter Portal Composer component. The flaw allows a low-privileged user with network access via HTTP to compromise the entire portal system. The attack requires authentication (the attacker must have valid user credentials) but no special complexity or user interaction. Successful exploitation results in complete takeover of the portal, including unauthorized access to confidential data, ability to modify content and configuration, and potential for service disruption. No patch information is currently available from the provided advisory text.

## Affected products

- Oracle WebCenter Portal 12.2.1.4.0, 14.1.2.0.0

## Timeline

- 2026-09-15: disclosed

## References

- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.html)

## Related threats

- [Oracle WebCenter Portal information disclosure in Runtime Tools](https://junglewise.ai/threats/cve-2026-91248-vulnerability-in-the-oracle-webcenter-portal-product-of-oracle)
- [Oracle WebCenter Portal authorization bypass in Runtime Tools](https://junglewise.ai/threats/cve-2026-91247-vulnerability-in-the-oracle-webcenter-portal-product-of-oracle)
- [Oracle WebCenter Portal cross-site request forgery in Runtime Tools](https://junglewise.ai/threats/cve-2026-91246-vulnerability-in-the-oracle-webcenter-portal-product-of-oracle)
- [Oracle WebCenter Portal information disclosure in Runtime Tools](https://junglewise.ai/threats/cve-2026-91245-vulnerability-in-the-oracle-webcenter-portal-product-of-oracle)
- [Oracle WebCenter Portal compromise via adjacent network access](https://junglewise.ai/threats/cve-2026-83065-oracle-webcenter-portal-compromise-via-adjacent-network-access)