CVE-2026-61157: Oracle Commerce Auth Bypass Vulnerability

CVE-2026-61157 Overview

CVE-2026-61157 is an information disclosure vulnerability in Oracle Commerce Guided Search and Oracle Commerce Experience Manager, specifically within the Experience Manager component. Oracle disclosed the issue in the July 2026 Critical Patch Update. The flaw affects version 11.4.0 and allows an unauthenticated remote attacker to read data via HTTP. Successful exploitation results in unauthorized access to critical data accessible through the affected product. The vulnerability requires no user interaction and no privileges, making it trivial to weaponize once a target is identified.

Critical Impact
An unauthenticated network attacker can obtain unauthorized access to all data accessible by Oracle Commerce Guided Search / Experience Manager, exposing confidential merchandising, customer, and catalog information.

Affected Products

Oracle Commerce Guided Search 11.4.0
Oracle Commerce Experience Manager 11.4.0
Oracle Commerce (Experience Manager component)

Discovery Timeline

2026-07-21 - CVE-2026-61157 published to NVD
2026-07-21 - Last updated in NVD database
July 2026 - Addressed in the Oracle Critical Patch Update Advisory - July 2026

Technical Details for CVE-2026-61157

Vulnerability Analysis

The vulnerability resides in the Experience Manager component of Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0. Oracle Commerce Experience Manager provides business users a browser-driven interface for arranging site content, promotions, and catalog experiences. The component exposes HTTP endpoints that, in the affected release, return sensitive data without enforcing authentication.

Oracle classifies the flaw as easily exploitable. An attacker only needs network reachability to the Experience Manager HTTP interface. There is no impact to integrity or availability, but confidentiality impact is high because the attacker can retrieve all data accessible by the product. Given an EPSS score of 0.398% (percentile 32.335), scanning activity for this issue is expected once details propagate.

Root Cause

Oracle has not published the underlying weakness class or code-level details. Based on the CVSS profile (unauthenticated network access, confidentiality-only impact), the root cause is consistent with missing authentication or broken access control on an HTTP endpoint that returns Experience Manager data. No CWE identifier has been assigned in NVD at the time of publication.

Attack Vector

The attack is delivered over HTTP against the Experience Manager service. The attacker sends a crafted request to a vulnerable endpoint and receives back data that should require authentication. No credentials, prior foothold, user interaction, or social engineering is required. Because Oracle Commerce deployments are frequently internet-facing to support merchandising workflows, exposed instances can be enumerated through standard web reconnaissance.

No public proof-of-concept, exploit code, or CISA KEV listing is available for CVE-2026-61157 at this time. Refer to the Oracle Security Alert July 2026 for vendor-supplied technical detail.

Detection Methods for CVE-2026-61157

Indicators of Compromise

Anomalous unauthenticated HTTP requests to Experience Manager URIs, especially high-volume enumeration of content or catalog resources.
HTTP 200 responses returning Experience Manager JSON or XML payloads to clients without a preceding authenticated session.
Outbound data transfers from Oracle Commerce hosts to unfamiliar external IP addresses following inbound HTTP traffic.

Detection Strategies

Inspect Experience Manager access logs for requests missing session or authentication headers that still return sensitive response bodies.
Correlate web application firewall (WAF) telemetry with backend Oracle Commerce logs to identify unauthenticated reads of Experience Manager endpoints.
Baseline normal Experience Manager API traffic patterns and alert on deviations in request volume, source geography, or user-agent strings.

Monitoring Recommendations

Enable verbose HTTP access logging on Oracle Commerce Experience Manager and forward logs to a centralized SIEM for retention and analysis.
Alert on repeated 200 OK responses to requests targeting Experience Manager URIs from a single IP within a short window.
Monitor egress traffic from Oracle Commerce servers for anomalous data volumes indicative of bulk content exfiltration.

How to Mitigate CVE-2026-61157

Immediate Actions Required

Apply the fixes from the Oracle Critical Patch Update - July 2026 to all Oracle Commerce Guided Search / Experience Manager 11.4.0 deployments.
Restrict network reachability to Experience Manager HTTP endpoints so only trusted administrative networks can access them.
Review Experience Manager access logs from the past 90 days for unauthenticated requests that returned sensitive response bodies.

Patch Information

Oracle addressed CVE-2026-61157 in the July 2026 Critical Patch Update. Administrators should install the Experience Manager patch for version 11.4.0 as published in the Oracle Security Alert July 2026. Oracle strongly recommends applying Critical Patch Update fixes without delay because published advisories are frequently reverse-engineered into exploits.

Workarounds

Place Experience Manager behind a reverse proxy or WAF that enforces authentication before requests reach the application.
Use network segmentation and firewall rules to limit HTTP access to Experience Manager to internal administrative subnets or VPN clients.
Disable or block public exposure of Experience Manager management URIs until the July 2026 CPU patch is applied.

bash

# Example nginx access restriction for Experience Manager endpoints
location /experience-manager/ {
    allow 10.0.0.0/8;      # internal admin network
    allow 192.168.10.0/24; # VPN pool
    deny all;
    proxy_pass http://oracle_commerce_backend;
}