CVE-2026-62620: Oracle Reports Developer Auth Bypass Flaw

CVE-2026-62620 Overview

CVE-2026-62620 is a network-exploitable vulnerability in the Oracle Reports Developer component of Oracle Fusion Middleware. The flaw resides in the Security and Authentication subsystem of version 12.2.1.19.0. Unauthenticated attackers can leverage HTTP requests to compromise the component without user interaction. Successful exploitation exposes critical data across scope boundaries, meaning impact extends beyond Oracle Reports Developer itself. Oracle published this issue in its August 2026 Critical Patch Update advisory.

Critical Impact
Unauthenticated attackers with network access can obtain unauthorized access to all data accessible through Oracle Reports Developer, with scope change affecting additional Oracle products.

Affected Products

Oracle Fusion Middleware — Oracle Reports Developer
Affected version: 12.2.1.19.0
Component: Security and Authentication

Discovery Timeline

2026-08-18 - CVE-2026-62620 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62620

Vulnerability Analysis

The vulnerability affects the Security and Authentication component of Oracle Reports Developer, a reporting engine within the Oracle Fusion Middleware stack. An attacker who can reach the reports service over HTTP can compromise the component without any credentials or user interaction. The CVSS vector notes a scope change, indicating that a successful attack against Reports Developer can affect resources managed by other Oracle components. The impact is limited to confidentiality; integrity and availability are not affected. This makes the flaw well-suited to data theft rather than tampering or service disruption.

Root Cause

Oracle has not publicly disclosed the underlying defect. Based on the component classification (Security and Authentication) and the confidentiality-only impact, the flaw likely stems from missing or improperly enforced access controls that permit an unauthenticated caller to reach protected reporting data. Refer to the Oracle Security Alert for vendor-supplied details.

Attack Vector

Exploitation occurs over the network via HTTP. No privileges or user interaction are required, and Oracle rates attack complexity as low. An attacker sends crafted HTTP requests to an exposed Oracle Reports Developer instance to retrieve data the service can reach. Because the scope changes on exploitation, additional Oracle products consuming or interoperating with Reports Developer may also be affected.

No public proof-of-concept exploit is currently available. The EPSS score is 0.303% as of 2026-08-20.

Detection Methods for CVE-2026-62620

Indicators of Compromise

Unauthenticated HTTP requests to Oracle Reports Developer endpoints originating from unexpected external sources.
Anomalous report generation or data export activity outside normal business hours or from unusual user agents.
Access to reporting URLs without a preceding authentication sequence in web server or reverse proxy logs.

Detection Strategies

Enable and centralize Oracle Reports Developer access logs, then correlate against expected authenticated traffic.
Deploy web application firewall rules that flag or block unauthenticated access attempts to reports endpoints.
Baseline outbound data volumes from the Reports Developer server and alert on statistically significant increases.

Monitoring Recommendations

Forward middleware and reverse proxy telemetry to a centralized SIEM for retention and correlation.
Alert on HTTP requests to Reports Developer paths that return sensitive report content without a corresponding session token.
Monitor east-west traffic between Reports Developer and adjacent Oracle Fusion Middleware components for scope-change indicators.

How to Mitigate CVE-2026-62620

Immediate Actions Required

Apply the fixes referenced in the Oracle August 2026 Critical Patch Update advisory to affected 12.2.1.19.0 installations.
Restrict network access to Oracle Reports Developer so that only trusted internal networks can reach the HTTP interface.
Audit reports server logs for signs of unauthenticated access prior to patching.

Patch Information

Oracle addressed CVE-2026-62620 in its August 2026 Critical Patch Update. See the Oracle Security Alert for patch identifiers, download instructions, and applicability guidance. Apply the update in a maintenance window after validating in a staging environment.

Workarounds

Place the Reports Developer service behind an authenticating reverse proxy or VPN until patches are applied.
Disable or firewall the reports HTTP listener from untrusted networks if the service is not required externally.
Enforce network segmentation between Reports Developer and downstream Oracle products to limit scope-change impact.

bash

# Example: restrict Reports Developer HTTP listener to trusted subnets
iptables -A INPUT -p tcp --dport 7777 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 7777 -j DROP