What is the CVSS score of CVE-2026-71020?

CVE-2026-71020 has a CVSS 3.1 base score of 7.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N. EPSS exploitation probability: 0.2%.

Which versions of Oracle Commerce Guided Search are affected by CVE-2026-71020?

Oracle Commerce Experience Manager version 11.4.0 and its Endeca Application Controller contain a scope-crossing vulnerability allowing low-privileged attackers to access confidential customer and…

How to fix or mitigate CVE-2026-71020?

Within 24 hours, inventory all Oracle Commerce Experience Manager 11.4.0 deployments and map which systems and data repositories the Endeca Application Controller component can access; brief incident response team on data scope at risk. Within 7 days, implement network segmentation to restrict Endeca Application Controller access to authorized internal networks only, enforce additional application-layer authorization checks for low-privilege accounts, and deploy security awareness messaging to reduce user-click risk on suspicious HTTP requests. Within 30 days, plan and execute an upgrade to a current, patched version of Oracle Commerce Experience Manager per Oracle Security Advisories; test thoroughly in non-production before production deployment, and document all dependent systems for coordinated cutover.

Oracle Commerce Guided Search CVE-2026-71020

EUVD-2026-61967 HIGH

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-6jxr-v493-vrp7

Authentication Bypass Oracle Commerce Experience Manager Commerce Guided Search

7.6

CVSS 3.1 · Vendor: oracle

Severity by source

Vendor (oracle) PRIMARY

7.6 HIGH

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

vuln.today AI

7.6 HIGH

Low-privileged network attacker with mandatory user interaction; scope change with high confidentiality and low integrity impact matches cross-component data exposure pattern.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

4.0 AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Aug 18, 2026 - 23:20 vuln.today

CVE Published

Aug 18, 2026 - 21:18 nvd

HIGH 7.6

DescriptionCVE.org

Vulnerability in the Oracle Commerce Guided Search / Oracle Commerce Experience Manager product of Oracle Commerce (component: Endeca Application Controller). The supported version that is affected is 11.4.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Commerce Guided Search / Oracle Commerce Experience Manager. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Commerce Guided Search / Oracle Commerce Experience Manager, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Commerce Guided Search / Oracle Commerce Experience Manager accessible data as well as unauthorized update, insert or delete access to some of Oracle Commerce Guided Search / Oracle Commerce Experience Manager accessible data. CVSS 3.1 Base Score 7.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N).

AnalysisAI

Unauthorized data access and limited data manipulation in Oracle Commerce Guided Search / Oracle Commerce Experience Manager version 11.4.0 is achievable by a low-privileged network attacker who can induce a victim user to interact with a crafted HTTP request targeting the Endeca Application Controller component. Successful exploitation causes a scope change, meaning the impact extends beyond the directly targeted application to additional Oracle Commerce products, enabling high-confidentiality data exposure and limited unauthorized data modification. …

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Vulnerability AssessmentAI

Exploitation	Exploitation requires that the attacker possess a valid low-privileged account on the Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0 instance (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 3.1 base score of 7.6 reflects a meaningful but not maximum-severity vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	Apply Oracle's Critical Security Patch Update (CPU) for August 2026, referenced at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Oracle Commerce Experience Manager 11.4.0 deployments and map which systems and data repositories the Endeca Application Controller component can access; brief incident response team on data scope at risk. …

Threat intelligence, references, and detailed analysis are available after sign-in.