CVE-2026-61293: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-61293 Overview

CVE-2026-61293 is a network-exploitable vulnerability in the Security component of Oracle Hyperion Calculation Manager, part of the Oracle Hyperion product family. The affected release is version 11.2.25.0.000. An unauthenticated attacker with HTTP access to the application can compromise the service, resulting in full takeover of Oracle Hyperion Calculation Manager. Oracle disclosed the issue in the Oracle Security Alert August 2026. The vulnerability impacts confidentiality, integrity, and availability, though exploitation is rated as high complexity.

Critical Impact
Successful exploitation allows an unauthenticated remote attacker to take over Oracle Hyperion Calculation Manager, exposing sensitive financial planning data and enabling arbitrary modification of calculation logic.

Affected Products

Oracle Hyperion Calculation Manager 11.2.25.0.000
Oracle Hyperion (Security component)
Deployments exposing Hyperion Calculation Manager over HTTP

Discovery Timeline

2026-08-18 - CVE-2026-61293 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-61293

Vulnerability Analysis

CVE-2026-61293 resides in the Security component of Oracle Hyperion Calculation Manager. The flaw is reachable over HTTP without any prior authentication or user interaction. Oracle categorizes the issue as difficult to exploit, indicating that specific timing, configuration, or environmental prerequisites must align for the attack to succeed. When exploitation succeeds, the attacker gains control equivalent to a takeover of the Calculation Manager service.

Because Hyperion Calculation Manager governs business rules, allocations, and financial calculations used in Enterprise Performance Management workflows, a takeover exposes sensitive financial data and lets an attacker modify calculation logic. Oracle has not released technical specifics beyond the Oracle Security Alert August 2026.

Root Cause

Oracle identifies the defect within the Security component of Hyperion Calculation Manager. The advisory does not disclose the specific weakness class or CWE mapping. Full confidentiality, integrity, and availability impact combined with no privilege or user-interaction requirement indicates an authentication or trust-boundary failure in the HTTP request handling path.

Attack Vector

The attack vector is network-based over HTTP. An attacker with reachability to the Hyperion Calculation Manager web endpoint can attempt exploitation without credentials. High attack complexity means the attacker must satisfy conditions outside their direct control, such as race windows or specific deployment states. No public proof-of-concept, CISA KEV listing, or in-the-wild exploitation has been reported. The EPSS probability is 0.315%.

No verified exploit code is available. Refer to the Oracle Security Alert August 2026 for vendor guidance and patch mapping.

Detection Methods for CVE-2026-61293

Indicators of Compromise

Unexpected administrative or configuration changes within Oracle Hyperion Calculation Manager rulesets or user roles.
Anonymous or unauthenticated HTTP requests reaching Calculation Manager endpoints from external or unusual internal sources.
New or modified calculation scripts, business rules, or allocation definitions without corresponding change-management records.
Outbound network connections initiated from the Hyperion application server to untrusted destinations.

Detection Strategies

Inspect Hyperion and web-tier access logs for anomalous request patterns targeting Calculation Manager URIs, especially requests lacking valid session tokens.
Correlate authentication logs with Calculation Manager administrative events to identify actions performed without a preceding successful login.
Baseline normal Calculation Manager traffic volume and alert on deviations, particularly bursts of HTTP requests from a single source.

Monitoring Recommendations

Forward Hyperion application, WebLogic, and HTTP server logs to a centralized SIEM for retention and correlation.
Enable file integrity monitoring on Hyperion configuration directories, calculation rule stores, and security metadata.
Alert on privileged operations in Calculation Manager that occur outside approved change windows.

How to Mitigate CVE-2026-61293

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert August 2026 to all affected Hyperion Calculation Manager deployments.
Inventory environments running Oracle Hyperion Calculation Manager 11.2.25.0.000 and prioritize internet-reachable instances for patching.
Restrict network access to Calculation Manager HTTP endpoints to trusted management networks only.
Review recent Calculation Manager audit logs for signs of unauthorized administrative actions.

Patch Information

Oracle addressed CVE-2026-61293 in the August 2026 Security Alert cycle. Administrators should consult the Oracle Security Alert August 2026 for the specific patch identifiers applicable to Oracle Hyperion Calculation Manager 11.2.25.0.000 and follow Oracle's documented patch application procedure.

Workarounds

Place Oracle Hyperion Calculation Manager behind a reverse proxy or web application firewall that enforces authentication before requests reach the application.
Block direct HTTP access from untrusted networks using perimeter firewalls and network segmentation.
Disable or remove any unnecessary Calculation Manager services and endpoints that are not required for business operations until patches are applied.

bash

# Example: restrict Hyperion Calculation Manager HTTP access with iptables
iptables -A INPUT -p tcp --dport 19000 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP