What is the CVSS score of CVE-2026-71027?

CVE-2026-71027 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: 0.3%.

Which versions of Oracle Commerce Endeca are affected by CVE-2026-71027?

Oracle Commerce Guided Search and Experience Manager version 11.4.0 contain a high-severity vulnerability allowing low-privileged users to access sensitive data and manipulate it partially, with…

How to fix or mitigate CVE-2026-71027?

Within 24 hours: Identify all systems running Oracle Commerce Guided Search and Experience Manager 11.4.0 and audit current low-privilege account permissions, then restrict access to the Endeca Application Controller and sensitive data endpoints. Within 7 days: Contact Oracle Support for vulnerability-specific guidance; review HTTP authentication and data access logs for anomalous low-privilege account activity; and document current role and privilege assignments. Within 30 days: Monitor Oracle's security advisories for patch release and establish a testing and deployment timeline to apply the update immediately when available.

Oracle Commerce Endeca CVE-2026-71027

EUVD-2026-61974 HIGH

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-47v2-rcxw-9jfc

Authentication Bypass Oracle Commerce Guided Search Commerce Experience Manager

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

Network HTTP access, low complexity, and low privilege confirmed; UI:R reflects mandatory victim interaction; S:C and C:H reflect scope change to additional Oracle Commerce products with critical data exposure; no availability impact described.

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 - 23:17 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 partial data manipulation in Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0 is achievable by a low-privileged authenticated attacker over HTTP when a victim user interacts with attacker-influenced content. The Endeca Application Controller component is the attack surface, and successful exploitation triggers a scope change that can significantly impact additional Oracle Commerce products beyond the directly targeted instance. …

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

technique details hidden

Delivery

technique details hidden

Exploit

technique details hidden

Execution

technique details hidden

Persist

technique details hidden

Impact

technique details hidden

Access

technique details hidden

Delivery

technique details hidden

Exploit

technique details hidden

Execution

technique details hidden

Persist

technique details hidden

Impact

technique details hidden

Vulnerability AssessmentAI

Exploitation	Exploitation requires the attacker to hold a low-privilege authenticated account (PR:L) on the Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0 deployment - unauthenticated exploitation is not indicated by the CVSS vector. … 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 combination of signals: network accessibility (AV:N), low complexity (AC:L), low privilege requirement (PR:L), scope change (S:C), and high confidentiality impact (C:H). … 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 the Oracle Critical Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses CVE-2026-71027. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all systems running Oracle Commerce Guided Search and Experience Manager 11.4.0 and audit current low-privilege account permissions, then restrict access to the Endeca Application Controller and sensitive data endpoints. …

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