# CVE-2026-91473: Oracle HTTP Server privilege escalation in Web Listener

Source: https://junglewise.ai/threats/cve-2026-91473-vulnerability-in-the-oracle-http-server-product-of-oracle-fusion  
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-2026-91473 · Severity: high · CVSS 7.8 · Published 2026-10-20

A vulnerability in Oracle HTTP Server, a web server component of Oracle Fusion Middleware, allows a low-privileged attacker with local access to take over the server process. An attacker exploiting this flaw could gain full control over the HTTP server, potentially exposing or manipulating web traffic and hosted applications.

Technologies: [Oracle Http Server](https://junglewise.ai/threats/technologies/oracle-http-server). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91473 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91473 being exploited in the wild.

**How severe is CVE-2026-91473?** High severity, with a CVSS score of 7.8, published 20 October 2026.

**Which products and versions are affected?** Oracle Http Server 12.2.1.4.0.

**Is there a fix for CVE-2026-91473?** 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-2026-91473 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2026-91473?** Check whether you run Oracle Http Server 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 privilege escalation vulnerability exists in the Web Listener component of Oracle HTTP Server 12.2.1.4.0. The vulnerability is easily exploitable by a low-privileged local attacker with login credentials to the infrastructure where the server runs, requiring no user interaction or special complexity. Successful exploitation allows complete compromise of the Oracle HTTP Server process, including confidentiality, integrity, and availability impacts.

## Affected products

- Oracle HTTP Server 12.2.1.4.0

## 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 HTTP Server privilege escalation in OSSL Module](https://junglewise.ai/threats/cve-2026-91419-vulnerability-in-the-oracle-http-server-product-of-oracle-fusion)
- [Oracle HTTP Server data access vulnerability in OSSL Module](https://junglewise.ai/threats/cve-2026-87347-vulnerability-in-the-oracle-http-server-product-of-oracle-fusion)
- [Oracle HTTP Server unauthorized data access in Weblogic Proxy Plug-in](https://junglewise.ai/threats/cve-2026-87346-vulnerability-in-the-oracle-http-server-product-of-oracle-fusion)
- [Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.](https://junglewise.ai/threats/cve-2026-34291-vulnerability-in-the-oracle-http-server-product-of-oracle-fusion)