CVE-2026-71035: Oracle Commerce Authentication Bypass Vulnerability

CVE-2026-71035 Overview

CVE-2026-71035 affects the Forge component of Oracle Commerce Guided Search and Oracle Commerce Experience Manager version 11.4.0. The vulnerability allows an unauthenticated attacker with network access via HTTP to compromise the affected product. Successful exploitation results in complete takeover of Oracle Commerce Guided Search / Oracle Commerce Experience Manager. The flaw is classified under CWE-284: Improper Access Control. While the attack complexity is high, no authentication or user interaction is required, and impacts span confidentiality, integrity, and availability.

Critical Impact
Successful exploitation results in full takeover of Oracle Commerce Guided Search / Experience Manager, with high impact to confidentiality, integrity, and availability.

Affected Products

Oracle Commerce Guided Search 11.4.0
Oracle Commerce Experience Manager 11.4.0
Forge component within Oracle Commerce

Discovery Timeline

2026-08-18 - CVE-2026-71035 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-71035

Vulnerability Analysis

CVE-2026-71035 resides in the Forge component of Oracle Commerce Guided Search and Oracle Commerce Experience Manager. Forge is the data-processing pipeline that ingests, transforms, and prepares catalog and content data for indexing. A weakness in the component allows an unauthenticated remote attacker to reach functionality that should be restricted.

Successful attacks result in takeover of the affected product. Attackers gaining control of Forge can manipulate the search index, tamper with merchandising rules, exfiltrate catalog data, and disrupt commerce operations. The attack complexity is rated high, meaning the attacker must satisfy conditions beyond their direct control, such as specific timing, configuration state, or network positioning.

Root Cause

The root cause is Improper Access Control [CWE-284] within the Forge component. Access decisions do not sufficiently restrict operations accessible over HTTP, permitting unauthenticated actors to reach privileged functions. Oracle has not published the specific code paths involved. Refer to the Oracle Security Alert CSPUAUG2026 for advisory details.

Attack Vector

The attack vector is network-based over HTTP. An attacker sends crafted requests to an exposed Forge endpoint without providing credentials. Because the access control gap allows the request to reach protected functionality, the attacker can escalate to full compromise of the Oracle Commerce Guided Search / Experience Manager instance. The high attack complexity indicates that exploitation depends on conditions such as service state, specific endpoint exposure, or configuration values that must be discovered or influenced by the attacker.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS probability for the next 30 days is 0.348%.

Detection Methods for CVE-2026-71035

Indicators of Compromise

Unauthenticated HTTP requests to Forge administrative or data-pipeline endpoints from external sources.
Unexpected changes to indexing configurations, merchandising rules, or Experience Manager content templates.
New or modified processes spawned by the Forge service account outside normal ingestion windows.
Outbound network connections from Forge hosts to unrecognized destinations.

Detection Strategies

Inspect web access logs for anomalous request patterns targeting Forge endpoints, including unusual URIs, HTTP methods, or User-Agent strings.
Compare current Forge and Experience Manager configuration artifacts against known-good baselines to identify unauthorized modifications.
Correlate authentication events with administrative actions to identify actions performed without a preceding valid session.

Monitoring Recommendations

Enable verbose HTTP logging on Oracle Commerce front-end servers and forward logs to a central SIEM for retention and correlation.
Alert on process execution and file writes originating from the Forge service account outside scheduled ingestion jobs.
Monitor egress traffic from Oracle Commerce hosts and flag connections to previously unseen IP addresses or domains.

How to Mitigate CVE-2026-71035

Immediate Actions Required

Apply the fixes referenced in Oracle Security Alert CSPUAUG2026 to all Oracle Commerce Guided Search and Experience Manager 11.4.0 deployments.
Restrict network access to Forge endpoints so that only trusted management networks and application tiers can reach them.
Audit Forge and Experience Manager configurations, indexes, and content for unauthorized changes since the vulnerability was disclosed.
Rotate credentials, API keys, and integration secrets used by the Oracle Commerce environment.

Patch Information

Oracle addressed CVE-2026-71035 in the security alert published on August 18, 2026. Administrators should consult the Oracle Security Alert CSPUAUG2026 for the specific patches, download locations, and installation prerequisites applicable to Oracle Commerce Guided Search / Experience Manager 11.4.0.

Workarounds

Place Forge behind a reverse proxy or web application firewall that enforces authentication and restricts access to known administrative source IPs.
Disable or firewall off any Forge HTTP interfaces that are not required for production operation until patching is complete.
Segment Oracle Commerce infrastructure from general corporate and internet-facing networks to reduce reachable attack surface.

bash

# Example: restrict access to Forge HTTP port using iptables
# Replace 10.0.0.0/24 with your trusted management subnet
iptables -A INPUT -p tcp --dport 8080 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP