CVE-2026-35244: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-35244 Overview

CVE-2026-35244 is an Improper Access Control vulnerability affecting the Oracle Hyperion Infrastructure Technology product, specifically within the Lifecycle Management component. This vulnerability allows a high-privileged attacker with network access via HTTP to compromise the Oracle Hyperion Infrastructure Technology system when combined with user interaction. Successful exploitation can result in unauthorized creation, deletion, or modification of critical data, as well as unauthorized read access to a subset of accessible data.

Critical Impact

This vulnerability enables attackers with administrative privileges to manipulate critical business data within Oracle Hyperion deployments, potentially compromising financial planning and analytics integrity.

Affected Products

• Oracle Hyperion Infrastructure Technology version 11.2.24.0.000
• Oracle Hyperion (Lifecycle Management component)

Discovery Timeline

• April 21, 2026 - CVE-2026-35244 published to NVD
• April 22, 2026 - Last updated in NVD database

Technical Details for CVE-2026-35244

Vulnerability Analysis

This vulnerability is classified under CWE-284 (Improper Access Control), indicating a flaw in the access control mechanisms within the Lifecycle Management component. The vulnerability requires an attacker to already possess high-level privileges within the system, which limits the initial attack surface. However, once these privileges are obtained, the exploitation path is straightforward and does not require complex attack techniques.

The attack requires human interaction from a person other than the attacker, suggesting a social engineering component or the need for an administrator to perform a specific action that triggers the vulnerability. This could involve processing malicious input through the Lifecycle Management interface or interacting with crafted content delivered via the HTTP interface.

Root Cause

The root cause lies in improper access control validation within the Lifecycle Management component of Oracle Hyperion Infrastructure Technology. The system fails to adequately verify authorization for certain operations, allowing privileged users to perform actions beyond their intended scope. This can result in unauthorized data manipulation affecting critical business intelligence and financial planning data managed by Oracle Hyperion.

Attack Vector

The attack is conducted over the network via HTTP, targeting the Lifecycle Management component. An attacker with high-level administrative privileges can exploit this vulnerability by:

1. Authenticating to the Oracle Hyperion Infrastructure Technology system with valid administrative credentials
2. Crafting requests to the Lifecycle Management component that exploit the improper access control
3. Leveraging social engineering or other methods to ensure the required user interaction occurs
4. Gaining unauthorized access to create, delete, or modify critical data while also obtaining read access to additional sensitive information

The vulnerability mechanism involves insufficient validation of user permissions when processing certain requests through the Lifecycle Management component. Detailed technical information can be found in the Oracle Security Advisory April 2026.

Detection Methods for CVE-2026-35244

Indicators of Compromise

• Unexpected modifications to Lifecycle Management artifacts or configurations
• Unusual HTTP requests to the Lifecycle Management component from administrative accounts
• Anomalous data access patterns involving critical Oracle Hyperion data stores
• Audit log entries showing unauthorized data creation, deletion, or modification operations

Detection Strategies

• Monitor HTTP traffic to Oracle Hyperion servers for suspicious request patterns targeting Lifecycle Management endpoints
• Implement file integrity monitoring on Oracle Hyperion configuration files and data directories
• Enable verbose logging for all administrative actions within Oracle Hyperion Infrastructure Technology
• Deploy behavioral analytics to detect unusual administrative activity patterns

Monitoring Recommendations

• Enable and regularly review Oracle Hyperion audit logs for unauthorized access attempts
• Configure alerts for bulk data modifications or deletions within Lifecycle Management
• Monitor for privilege escalation attempts or unusual authentication patterns to administrative accounts
• Implement network segmentation monitoring to detect lateral movement toward Hyperion infrastructure

How to Mitigate CVE-2026-35244

Immediate Actions Required

• Apply the security patch from Oracle's April 2026 Critical Patch Update immediately
• Review and restrict administrative access to only essential personnel
• Enable additional authentication controls for Lifecycle Management operations
• Implement network segmentation to limit exposure of Oracle Hyperion servers

Patch Information

Oracle has addressed this vulnerability in the April 2026 Critical Patch Update. Administrators should apply the patch for Oracle Hyperion Infrastructure Technology version 11.2.24.0.000 as documented in the Oracle Security Advisory April 2026. Organizations should follow their standard change management procedures while prioritizing this update based on their Oracle Hyperion deployment criticality.

Workarounds

• Restrict network access to Oracle Hyperion Infrastructure Technology servers using firewall rules to limit HTTP access to trusted networks only
• Implement additional authentication requirements such as multi-factor authentication for administrative accounts
• Enable enhanced logging and monitoring to detect potential exploitation attempts
• Review and minimize the number of users with high-privilege access to the system

# Example: Restrict access to Hyperion servers via iptables
# Allow only trusted management network
iptables -A INPUT -p tcp --dport 80 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP