CVE-2026-62520: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-62520 Overview

CVE-2026-62520 is a vulnerability in the Oracle Hyperion Infrastructure Technology product, specifically within the Common Events component. The affected version is 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can exploit this vulnerability, though successful exploitation requires overcoming significant conditions that make it difficult to execute.

Successful attacks can result in unauthorized update, insert, or delete access to some Oracle Hyperion Infrastructure Technology data. Attackers can also gain unauthorized read access to a subset of accessible data. The vulnerability affects confidentiality and integrity, but not availability.

Critical Impact
Unauthenticated network-based attackers who successfully exploit this vulnerability can modify and read a subset of Oracle Hyperion Infrastructure Technology data without valid credentials.

Affected Products

Oracle Hyperion Infrastructure Technology 11.2.25.0.000
Common Events component
Oracle Hyperion product family

Discovery Timeline

2026-08-18 - CVE-2026-62520 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62520

Vulnerability Analysis

The vulnerability resides in the Common Events component of Oracle Hyperion Infrastructure Technology. Attackers reach the affected component over HTTP without authentication. The exploitation path requires specific conditions that increase attack complexity, meaning attackers must overcome additional obstacles beyond simply sending a request.

Successful exploitation grants partial write access to data managed by the Hyperion Infrastructure Technology component. Attackers can insert, update, or delete records in a subset of the accessible dataset. Read access to some data is also possible, exposing information the application manages internally.

Oracle has not published detailed technical analysis of the underlying flaw. The Oracle Security Alert entry provides remediation guidance for affected deployments. See the Oracle Security Alert for advisory details.

Root Cause

Oracle has not disclosed a specific weakness classification for this issue. The vulnerability originates in the Common Events subsystem of Hyperion Infrastructure Technology and is reachable through the HTTP interface without authentication. Difficulty of exploitation suggests conditions such as race timing, specific configuration state, or crafted payload requirements.

Attack Vector

The attack vector is network-based over HTTP. Attackers do not require prior authentication or user interaction. The scope remains unchanged, meaning the impact is contained within the vulnerable component. Because exploitation is difficult, exposure to opportunistic attackers is reduced compared to trivially exploitable flaws.

No public proof-of-concept exploit code is available at this time. No exploitation in the wild has been reported.

Detection Methods for CVE-2026-62520

Indicators of Compromise

Unexpected HTTP requests targeting the Oracle Hyperion Common Events endpoints from unauthenticated sources
Unauthorized modifications, insertions, or deletions in Hyperion Infrastructure Technology data stores
Anomalous read operations against Hyperion data from external or non-application sources

Detection Strategies

Enable Oracle Hyperion application logging and forward events to a centralized SIEM for correlation
Baseline normal HTTP traffic patterns to Hyperion services and alert on deviations targeting Common Events
Review database audit logs for unexpected write operations from the Hyperion Infrastructure Technology service account

Monitoring Recommendations

Monitor web server access logs on Oracle Hyperion servers for unauthenticated requests to Common Events URLs
Track integrity of Hyperion data tables using database triggers or change data capture
Alert on outbound network connections from Hyperion hosts to unexpected destinations

How to Mitigate CVE-2026-62520

Immediate Actions Required

Apply the security update referenced in the Oracle Critical Patch Update Advisory published in August 2026
Restrict network access to Oracle Hyperion Infrastructure Technology HTTP endpoints to trusted management networks only
Audit Hyperion data stores for signs of unauthorized modification or read access

Patch Information

Oracle addressed CVE-2026-62520 through its Critical Patch Update process. Administrators should apply the patch documented in the Oracle Security Alert for Oracle Hyperion Infrastructure Technology version 11.2.25.0.000. Follow Oracle's standard patch application procedures for Hyperion environments to avoid service disruption.

Workarounds

Place Oracle Hyperion Infrastructure Technology behind a reverse proxy or web application firewall that restricts access to authenticated users
Segment Hyperion servers on isolated network zones with strict ingress filtering for HTTP traffic
Disable or restrict access to the Common Events component if not required for business operations

bash

# Example: restrict HTTP access to Hyperion via firewall to trusted subnet only
iptables -A INPUT -p tcp --dport 19000 -s 10.10.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP