CVE-2026-91473

Awaiting Analysis Awaiting Analysis - Queue

Oracle HTTP Server Privilege Escalation Vulnerability

Publication date: 2026-10-20

Last updated on: 2026-10-24

Assigner: Oracle

Description

Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: Web Listener). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle HTTP Server executes to compromise Oracle HTTP Server. Successful attacks of this vulnerability can result in takeover of Oracle HTTP Server. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-24

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91473

EUVD

EUVD-2026-106718

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	Oracle HTTP Server	12.2.1.4.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle HTTP Server 12.2.1.4.0 where a low-privileged attacker with local access can exploit it to take over the server. It has a CVSS score of 7.8, indicating high impact on confidentiality, integrity, and availability.

Detection Guidance

Detection requires checking for Oracle HTTP Server version 12.2.1.4.0 and verifying if the system is running Oracle Fusion Middleware with the affected component. Use commands like 'opatch lsinventory' to check installed patches or 'httpd -v' to verify the server version. Ensure logs are monitored for unauthorized access attempts.

Impact Analysis

An attacker could gain full control of the Oracle HTTP Server, leading to unauthorized access, data theft, or disruption of services. This requires only local access, making it easier to exploit.

Compliance Impact

This vulnerability allows low-privileged attackers to compromise Oracle HTTP Server, potentially leading to unauthorized access, data breaches, or service disruptions. Such impacts could violate GDPR (data protection), HIPAA (healthcare data security), or other compliance requirements by exposing sensitive information or disrupting critical systems.

Mitigation Strategies

Apply the latest Oracle HTTP Server patches from Oracle immediately. Ensure only authorized users have logon access to the infrastructure where Oracle HTTP Server executes. Monitor for unusual activity in Oracle HTTP Server logs.

Hi! I’m here to help you understand CVE-2026-91473. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...