CVE-2026-62582: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-62582 Overview

CVE-2026-62582 is a critical vulnerability in the Oracle Hyperion Calculation Manager component of Oracle Hyperion. The flaw exists in the Security component of version 11.2.25.0.000. An attacker with low privileges and network access via HTTP can exploit this vulnerability without user interaction. Successful exploitation results in unauthorized creation, deletion, or modification of critical data and complete read access to all Oracle Hyperion Calculation Manager accessible data. The vulnerability includes a scope change, meaning exploitation impacts resources beyond the vulnerable component.

Critical Impact
Low-privileged network attackers can compromise confidentiality and integrity of Oracle Hyperion Calculation Manager data, with impact extending to additional connected products through scope change.

Affected Products

Oracle Hyperion Calculation Manager
Oracle Hyperion version 11.2.25.0.000
Oracle Hyperion Calculation Manager Security component

Discovery Timeline

2026-08-18 - CVE-2026-62582 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62582

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Calculation Manager. An authenticated attacker holding low-level privileges can send crafted HTTP requests to compromise the application. The flaw is classified as easily exploitable, requiring no user interaction and no elevated privileges beyond an authenticated account.

The scope change designation indicates that the vulnerable component can affect resources managed by a different security authority. This substantially expands the potential blast radius beyond the Hyperion Calculation Manager itself, reaching additional Oracle Hyperion products in the environment.

Successful exploitation grants attackers the ability to read, create, modify, or delete all data accessible to Hyperion Calculation Manager. Financial planning, budgeting, and consolidation data managed by the platform is directly at risk.

Root Cause

Oracle's advisory identifies the vulnerability within the Security component of Hyperion Calculation Manager. Oracle Critical Patch Update advisories typically restrict deep technical detail. Refer to the Oracle Security Alert for authoritative vendor guidance.

Attack Vector

Exploitation occurs over the network via HTTP. The attacker requires network reachability to the Hyperion Calculation Manager web interface and low-privileged authenticated credentials. No user interaction is required to complete the attack chain.

The vulnerability affects data confidentiality and integrity but does not directly impact availability. Attackers can exfiltrate sensitive financial data or manipulate calculation logic to alter reported figures.

See the Oracle Security Alert for authoritative technical details.

Detection Methods for CVE-2026-62582

Indicators of Compromise

Unexpected HTTP requests to Oracle Hyperion Calculation Manager endpoints from low-privileged accounts
Anomalous data modification events in Hyperion Calculation Manager audit logs
Unauthorized access patterns to calculation rules, business rules, or security metadata
Cross-product access attempts originating from Hyperion Calculation Manager sessions

Detection Strategies

Monitor Oracle Hyperion audit logs for privilege escalation patterns and unusual data access by low-privileged accounts
Correlate HTTP access logs against expected user roles and permissions
Baseline normal calculation rule modifications and alert on deviations
Track authentication events followed by immediate data export or modification activity

Monitoring Recommendations

Enable comprehensive audit logging on all Hyperion Calculation Manager instances
Forward web server and application logs to a centralized SIEM for correlation across Hyperion components
Alert on scope-crossing activity between Hyperion Calculation Manager and adjacent Oracle Hyperion products
Review access control lists and authentication events for the Security component regularly

How to Mitigate CVE-2026-62582

Immediate Actions Required

Apply Oracle's security patch from the August 2026 Critical Security Patch Update immediately
Inventory all Oracle Hyperion Calculation Manager 11.2.25.0.000 deployments across the environment
Restrict network access to Hyperion Calculation Manager to trusted management networks
Audit existing low-privileged accounts and revoke unused credentials

Patch Information

Oracle addressed CVE-2026-62582 in the August 2026 Critical Security Patch Update. Consult the Oracle Security Alert for patch identifiers, download locations, and installation prerequisites specific to affected Hyperion deployments.

Workarounds

Place Hyperion Calculation Manager behind a web application firewall configured to inspect HTTP traffic
Enforce network segmentation to limit reachability of the Hyperion management interface
Reduce the number of low-privileged accounts with access to Hyperion Calculation Manager
Enable multi-factor authentication on all accounts capable of authenticating to the application

bash

# Configuration example
# Restrict Hyperion Calculation Manager network access at the firewall
# Replace <trusted_subnet> and <hyperion_host> with environment-specific values
iptables -A INPUT -p tcp --dport 443 -s <trusted_subnet> -d <hyperion_host> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -d <hyperion_host> -j DROP