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Oracle Commerce CVE-2026-71021

| EUVDEUVD-2026-61968 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-x4gc-5gc4-hx6g
7.6
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged Commerce account
  2. Delivery
    Inject malicious payload via Endeca Application Controller HTTP endpoint
  3. Exploit
    Wait for privileged victim to interact with Controller interface
  4. Execution
    Trigger authentication bypass in Application Controller
  5. Persist
    Exfiltrate critical Commerce data across scope boundary
  6. Impact
    Perform limited unauthorized data modification in connected Commerce components

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the attacker to hold a valid low-privileged account on the Oracle Commerce 11.4.0 instance with network access via HTTP to the Endeca Application Controller - this is not an unauthenticated attack. A separate, distinct victim user (PR:L attacker cannot self-trigger) must perform some form of human interaction within the Application Controller interface for the attack to succeed; this interaction is the gating condition. Exploitation is limited to Oracle Commerce version 11.4.0 specifically. The scope change means the attacker's impact extends to additional Oracle Commerce subsystems connected through the Application Controller, but the initial foothold still requires the low-priv authenticated position plus victim interaction - attackers without credentials or without the ability to induce victim interaction cannot exploit this vulnerability remotely.

Impact

The CVSS 3.1 score of 7.6 reflects a meaningful combination of network accessibility, low attack complexity, and a scope change yielding high confidentiality impact - factors that together indicate a genuinely exploitable vulnerability. However, PR:L confirms this is not an unauthenticated attack surface; an attacker must first obtain low-level credentials, which represents a meaningful barrier. The UI:R requirement further constrains the attack, as exploitation depends on a victim user interacting with attacker-controlled material, reducing the likelihood of fully automated, opportunistic exploitation. No EPSS data was provided, so exploitation probability cannot be quantified from that signal. Neither CISA KEV inclusion nor public proof-of-concept code has been identified, which suggests no confirmed widespread exploitation at time of analysis. The scope change (S:C) is the most concerning signal: successful exploitation does not stay contained within the Endeca Application Controller but can affect adjacent Oracle Commerce components, amplifying the data exposure beyond a single service. Overall, this is a real priority for organizations running Oracle Commerce 11.4.0 with external or multi-tenant access, but the authentication prerequisite and user-interaction requirement reduce the urgency compared to unauthenticated, zero-click vulnerabilities of similar CVSS score. Internal-only deployments behind strong perimeter controls face meaningfully lower risk.

Exploit ScenarioDerived

An attacker with a low-privileged account on an Oracle Commerce 11.4.0 instance submits a crafted payload - likely via a stored injection mechanism within the Endeca Application Controller - that activates when a higher-privileged Commerce administrator or operator subsequently interacts with the affected interface. Upon victim interaction, the attacker's payload exploits the authorization bypass to retrieve critical configuration or catalog data accessible to the Application Controller, and may also modify limited data records across connected Commerce components due to the scope change. No public proof-of-concept code has been identified at time of analysis, but the low attack complexity and standard HTTP vector mean a capable attacker could develop a working exploit from the description alone.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 18, 2026

Unauthorized data access and partial data manipulation in Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0 allows a network-accessible, low-privileged authenticated attacker to compromise the Endeca Application Controller through HTTP, provided a victim user interacts with attacker-controlled content. The vulnerability carries a scope change, meaning successful exploitation can cascade to affect additional Oracle Commerce components beyond the directly targeted product, resulting in high confidentiality impact and limited integrity compromise. No public exploit code or CISA KEV listing has been identified at time of analysis, though the vendor-tagged 'Authentication Bypass' nature elevates practical concern for multi-tenant or externally accessible deployments.

RemediationAI

The primary remediation is to apply Oracle's Critical Patch Update for August 2026, which addresses this vulnerability for Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0; the advisory is published at https://www.oracle.com/security-alerts/cspuaug2026.html. An exact patched version number was not published in the available intelligence, so organizations should consult Oracle Support or My Oracle Support (MOS) directly to confirm the precise patch identifier and release. If immediate patching is not possible, organizations should restrict HTTP access to the Endeca Application Controller endpoint to trusted internal networks or authenticated administrative segments only, reducing the attack surface by preventing low-privileged external users from reaching the vulnerable component - note this may impact search and experience management functionality for legitimate end users. Additionally, disabling or rate-limiting user-generated content submission paths within the Application Controller (to limit stored payload injection vectors) can reduce the feasibility of the UI:R attack chain, though this may affect merchandising or configuration workflows. Organizations should also audit low-privileged user accounts with access to the Endeca Application Controller and revoke any unnecessary access pending patch application.

Affected VersionsENISA

Oracle Commerce Guided Search / Oracle Commerce Experience Manager 11.4.0

Affected Packages

euvd oracle_commerce_guided_search_oracle_commerce_experience_manager no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the Endeca Application Controller, part of Oracle Commerce Guided Search and Oracle Commerce Experience Manager version 11.4.0 - a search, navigation, and experience management platform commonly deployed in enterprise e-commerce environments. The CVSS scope-change indicator (S:C) reflects the Endeca architecture where the Application Controller coordinates across multiple internal services and data sources; a compromise of this controller can propagate access to other Commerce subsystems. The 'Authentication Bypass' tag reported by Oracle suggests the root mechanism allows a low-privileged authenticated user to exceed their authorized access level - consistent with improper authorization or a broken access control flaw (aligned with CWE-284 or CWE-863 classes, though Oracle did not publish a formal CWE identifier for this entry). The HTTP attack vector and low complexity indicate the vulnerable endpoint is reachable via standard web traffic without special conditions. The user-interaction requirement (UI:R) strongly suggests a client-side attack surface - such as stored cross-site scripting or CSRF - within the Application Controller that requires a second, presumably higher-privileged, user to trigger the exploit path.

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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

PR:L confirmed by low-privileged attacker requirement; UI:R confirmed by human interaction prerequisite; S:C by cross-component impact; no availability impact identified.

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

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).

Executive ViewAI

Why It Matters

Oracle Commerce Guided Search and Experience Manager 11.4.0 contain a data access vulnerability allowing authenticated users to view and modify information beyond their authorized scope, with potential to cascade across interconnected Commerce components. Multi-tenant and externally accessible deployments face significant risk of unauthorized data exposure and manipulation if user credentials are compromised.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include: (1) Network segmentation restricting Endeca Application Controller access to internal systems only; (2) Credential hardening through multi-factor authentication and privilege minimization, as exploitation requires authenticated access; (3) Real-time monitoring and alerting on anomalous data queries and modifications; (4) Access control reviews to ensure users retain only necessary permissions; (5) Incident response procedures for rapid containment if unauthorized access is detected.

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Prevalence
Low
enterprise e-commerce search platform, limited niche deployment footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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