CVE-2026-62618: Oracle Reports Developer Auth Bypass Flaw

CVE-2026-62618 Overview

CVE-2026-62618 is a critical vulnerability in the Oracle Reports Developer product of Oracle Fusion Middleware. The flaw resides in the Security and Authentication component of version 12.2.1.19.0. An unauthenticated attacker with network access via HTTP can exploit this vulnerability to compromise Oracle Reports Developer. Successful exploitation can result in unauthorized access to critical data and unauthorized update, insert, or delete access to Oracle Reports Developer accessible data. The vulnerability produces a scope change, meaning attacks may significantly impact additional products beyond Oracle Reports Developer itself.

Critical Impact
Unauthenticated remote attackers can compromise Oracle Reports Developer over HTTP, gaining full read access to sensitive data and partial write access, with cascading impact to adjacent products through scope change.

Affected Products

Oracle Fusion Middleware
Oracle Reports Developer
Oracle Reports Developer version 12.2.1.19.0

Discovery Timeline

2026-08-18 - CVE-2026-62618 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62618

Vulnerability Analysis

The vulnerability affects the Security and Authentication component of Oracle Reports Developer. Oracle classifies the issue as easily exploitable over the network without authentication or user interaction. An attacker sending crafted HTTP requests can bypass authentication controls to reach protected functionality and data. The scope change indicator signals that a successful exploit extends beyond the vulnerable component and can affect resources managed by other Oracle Fusion Middleware products deployed alongside Reports Developer. Confidentiality impact is rated high, while integrity impact is limited to a subset of accessible data. Availability of the targeted service is not directly affected.

Root Cause

Oracle has not published detailed root cause information beyond attributing the flaw to the Security and Authentication component. The behavior is consistent with an authentication bypass condition in the HTTP-facing surface of Oracle Reports Developer. Attackers do not require valid credentials or prior user interaction to reach the vulnerable code path.

Attack Vector

The attack vector is network-based over HTTP. An unauthenticated remote attacker sends crafted requests to an exposed Oracle Reports Developer instance. No user interaction is required, and attack complexity is low. Because the vulnerability produces a scope change, the impact reaches components and data outside the immediate security authority of Oracle Reports Developer. Refer to the Oracle Security Alert for authoritative vendor details.

Detection Methods for CVE-2026-62618

Indicators of Compromise

Unexpected HTTP requests to Oracle Reports Developer endpoints from external or untrusted networks
Access to reports or data resources without corresponding successful authentication events in application logs
Anomalous data extraction volumes or unusual query patterns against report data sources
New or modified report definitions and configuration entries lacking a matching administrative change record

Detection Strategies

Correlate Oracle Reports Developer HTTP access logs against authentication events to surface requests that reached protected resources without a valid session
Baseline normal report execution patterns and alert on deviations in requester origin, execution frequency, or payload characteristics
Monitor web application firewall telemetry for malformed or unusual parameters targeting Reports Developer URLs

Monitoring Recommendations

Forward Oracle Fusion Middleware and Reports Developer logs to a centralized SIEM for retention and correlation
Alert on outbound data transfers from application servers that host Reports Developer to unexpected destinations
Track configuration file changes on Reports Developer hosts and flag modifications outside change windows

How to Mitigate CVE-2026-62618

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert as the primary remediation
Inventory all Oracle Fusion Middleware deployments and confirm which hosts run Oracle Reports Developer 12.2.1.19.0
Restrict network access to Reports Developer HTTP endpoints to trusted management networks until patches are applied
Rotate credentials and secrets accessible to Reports Developer if exposure is suspected

Patch Information

Oracle addressed this vulnerability in the security alert dated August 2026. Administrators should review the Oracle Security Alert and apply the corresponding patch for Oracle Reports Developer 12.2.1.19.0. Oracle Critical Patch Updates are cumulative; installing the latest bundle for the affected Fusion Middleware release will remediate this issue.

Workarounds

Place Oracle Reports Developer behind an authenticating reverse proxy or web application firewall that enforces access controls on HTTP traffic
Block internet exposure of Reports Developer and require VPN or bastion access for administrative and reporting workflows
Disable or firewall off unused Reports Developer HTTP services if the component is not in active use

bash

# Example iptables rule restricting HTTP access to Oracle Reports Developer
# Replace 10.0.0.0/24 with your trusted management network and 7777 with the actual port
iptables -A INPUT -p tcp --dport 7777 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7777 -j DROP