CVE-2026-70672: Oracle Reports Developer Auth Bypass Flaw

CVE-2026-70672 Overview

CVE-2026-70672 affects the Oracle Reports Developer product within Oracle Fusion Middleware. The flaw resides in the Security and Authentication component of version 14.1.2.0.0. An unauthenticated attacker with network access via HTTP can compromise Oracle Reports Developer, though successful exploitation requires overcoming high attack complexity.

Successful attacks result in unauthorized creation, deletion, or modification of critical data. Attackers can also gain unauthorized read access to all data accessible through Oracle Reports Developer. Oracle published details in its August 2026 security advisory.

Critical Impact
Unauthenticated network attackers can achieve full read and write access to all Oracle Reports Developer accessible data, compromising confidentiality and integrity of business reporting infrastructure.

Affected Products

Oracle Fusion Middleware
Oracle Reports Developer version 14.1.2.0.0
Security and Authentication component

Discovery Timeline

2026-08-18 - CVE-2026-70672 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70672

Vulnerability Analysis

The vulnerability resides in the Security and Authentication component of Oracle Reports Developer 14.1.2.0.0. Oracle Reports Developer is a business intelligence reporting tool bundled with Oracle Fusion Middleware. The flaw enables unauthenticated network attackers to bypass authentication controls and access protected report data and functionality.

Exploitation requires HTTP network reachability to the affected Oracle Reports Developer instance. No user interaction or prior credentials are needed. The high attack complexity indicates that successful exploitation depends on conditions outside attacker control, such as timing, configuration state, or specific request sequencing.

The impact spans both confidentiality and integrity. Attackers can read all data accessible to Oracle Reports Developer and modify, create, or delete records. Availability is not affected, which suggests the flaw does not crash the reporting service or exhaust resources during exploitation.

Root Cause

Oracle has not published detailed root cause information beyond the component classification. The Security and Authentication component designation indicates the weakness lies in how Oracle Reports Developer validates credentials or enforces access decisions on HTTP requests. See the Oracle Security Alert for vendor-supplied details.

Attack Vector

The attack vector is network-based over HTTP. An unauthenticated attacker sends crafted HTTP requests to the Oracle Reports Developer endpoint. Because Oracle Reports Developer is typically deployed as part of internal reporting infrastructure, exposure varies by deployment topology. Environments that expose reporting services beyond trusted network segments face higher risk.

The EPSS score is 0.318% (24.7 percentile) as of 2026-08-20, indicating a low likelihood of exploitation in the near term. No public proof-of-concept or exploit code is available at time of publication.

Detection Methods for CVE-2026-70672

Indicators of Compromise

Unexpected HTTP requests to Oracle Reports Developer endpoints from unauthorized source addresses
Anomalous report generation, deletion, or modification events outside normal business hours
Authentication logs showing successful access without corresponding credential validation entries
New or modified report definitions that do not correlate with authorized change tickets

Detection Strategies

Correlate Oracle Fusion Middleware access logs with authenticated session data to identify unauthenticated requests reaching protected endpoints
Monitor Oracle Reports Developer audit trails for creation, deletion, or modification events that lack an authenticated user context
Deploy web application firewall rules to log and inspect HTTP traffic patterns targeting /reports/ URI paths

Monitoring Recommendations

Enable verbose audit logging on Oracle Reports Developer and forward logs to a centralized SIEM for correlation
Baseline normal report execution volumes and alert on statistical deviations
Track HTTP response codes and payload sizes on reporting endpoints to detect enumeration or data exfiltration attempts

How to Mitigate CVE-2026-70672

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert for August 2026
Inventory all Oracle Reports Developer 14.1.2.0.0 instances and prioritize patching internet-facing deployments first
Restrict network access to Oracle Reports Developer endpoints to trusted management segments until patching is complete
Review authentication and access logs for indicators of prior exploitation attempts

Patch Information

Oracle addressed CVE-2026-70672 through its August 2026 Critical Patch Update cycle. Administrators should consult the Oracle Security Alert for specific patch identifiers, prerequisites, and installation guidance applicable to their Fusion Middleware deployment.

Workarounds

Place Oracle Reports Developer behind a reverse proxy or web application firewall that enforces authentication before requests reach the application
Apply network segmentation to limit HTTP reachability to Oracle Reports Developer from untrusted networks
Disable or remove unused Reports Developer components and endpoints that are not required for business operations
Enforce mutual TLS or additional authentication layers at the network edge as compensating controls until patching completes

bash

# Example: restrict access to Oracle Reports Developer via iptables
# Allow only trusted management subnet to reach Reports Developer HTTP port
iptables -A INPUT -p tcp --dport 7777 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7777 -j DROP