# CVE-2026-87399: Oracle WebCenter Content unauthorized data modification in Content Server

Source: https://junglewise.ai/threats/cve-2026-87399-vulnerability-in-the-oracle-webcenter-content-product-of-oracle  
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-2026-87399 · Severity: medium · CVSS 6.3 · Published 2026-10-20

Oracle WebCenter Content is a document and content management system used by enterprises to store and manage critical business data. A low-privileged attacker with network access can exploit this vulnerability to create, delete, or modify sensitive data, or read restricted information—but only if a user clicks on a malicious link or performs a similar action. The vulnerability affects version 14.1.2.0.0 and could enable unauthorized access to confidential business documents and records.

Technologies: [Oracle Webcenter Content](https://junglewise.ai/threats/technologies/webcenter-content). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-87399 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87399 being exploited in the wild.

**How severe is CVE-2026-87399?** Medium severity, with a CVSS score of 6.3, published 20 October 2026.

**Which products and versions are affected?** Oracle Webcenter Content 14.1.2.0.0.

**Is there a fix for CVE-2026-87399?** 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-2026-87399 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-87399?** Check whether you run Oracle Webcenter Content 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 an easily exploitable vulnerability in the Content Server component that requires low privilege network access over HTTP and user interaction (UI-dependent). An attacker can achieve unauthorized creation, deletion, or modification of critical data and unauthorized read access to a subset of accessible data. The vulnerability is present in Oracle WebCenter Content 14.1.2.0.0.

## Affected products

- Oracle WebCenter Content 14.1.2.0.0

## 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 WebCenter Content privilege escalation in Content Portal Suite](https://junglewise.ai/threats/cve-2026-91504-vulnerability-in-the-oracle-webcenter-content-product-of-oracle)
- [Oracle WebCenter Content unauthenticated takeover](https://junglewise.ai/threats/cve-2026-91495-vulnerability-in-the-oracle-webcenter-content-product-of-oracle)
- [Oracle WebCenter Content credential exposure via HTTP in Content Server](https://junglewise.ai/threats/cve-2026-91262-vulnerability-in-the-oracle-webcenter-content-product-of-oracle)
- [Oracle WebCenter Content cross-site request forgery in Content Server](https://junglewise.ai/threats/cve-2026-91210-vulnerability-in-the-oracle-webcenter-content-product-of-oracle)
- [Oracle WebCenter Content server-side request forgery with user interaction](https://junglewise.ai/threats/cve-2026-87400-vulnerability-in-the-oracle-webcenter-content-product-of-oracle)