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Oracle WebCenter Content EUVDEUVD-2026-106441

| CVE-2026-87400 MEDIUM
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-wq8r-mvxm-qpc6
6.9
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
    Identify internet-facing WebCenter Content host
  2. Delivery
    Deliver crafted HTTP link to target user
  3. Exploit
    User interaction triggers vulnerability
  4. Execution
    Satisfy high-complexity conditions
  5. Impact
    Exfiltrate critical data and impact adjacent products

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 (1) network/HTTP reachability to an Oracle WebCenter Content 14.1.2.0.0 Content Server instance, (2) human interaction from a victim other than the attacker - per the description and UI:R - such as opening a crafted link or performing an induced action, and (3) satisfaction of high-complexity preconditions (AC:H), indicating a race condition, specific non-default state, or precise timing rather than a single deterministic request. No valid credentials are needed (PR:N, unauthenticated). The practical limiting factors are the mandatory user interaction and the high attack complexity, which together substantially reduce the likelihood of reliable, widespread exploitation even though the vector is network-based. The scope change (S:C) means a successful attack may reach beyond WebCenter Content into connected products, so defenders should also consider trust relationships and downstream integrations.

Impact

This is a moderate-priority issue whose real-world risk is constrained by its exploitation mechanics despite a non-trivial 6.9 CVSS score. The CVSS vector (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N) shows a network-reachable, unauthenticated vector but with HIGH attack complexity and REQUIRED user interaction - meaning an attacker cannot simply fire a remote exploit; they must win a race or satisfy special conditions AND trick a legitimate user into an action. Oracle itself characterizes it as 'difficult to exploit.' The scope change (S:C) and note that attacks 'may significantly impact additional products' raise the ceiling of potential damage, and impact is weighted toward confidentiality (C:H) with limited integrity (I:L) and no availability impact (A:N). No EPSS score, KEV listing, or POC was provided in the input: there is no public exploit identified at time of analysis and no evidence of active exploitation. The combination of AC:H + UI:R materially lowers practical exploitability, so this reads as a genuine-but-not-urgent flaw rather than a drop-everything emergency - prioritize it within normal Oracle CPU patching cadence unless telemetry shows targeting. Note a conflict in the input metadata: the 'Authentication Bypass' tag does not match the described behavior (an unauthenticated, user-interaction-dependent information-disclosure flaw with scope change), so that tag should be treated with skepticism and verified against the Oracle advisory.

Exploit ScenarioDerived

An attacker crafts a malicious link or request targeting an internet-reachable Oracle WebCenter Content 14.1.2.0.0 server and lures a legitimate user (e.g., a content author or administrator) into interacting with it. Because the flaw has high attack complexity, the attacker must also satisfy specific timing or configuration conditions; on success, they gain read access to critical WebCenter Content data and limited write access, with potential spillover into other connected products due to the scope change. No public exploit code was identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Oracle WebCenter Content 14.1.2.0.0 allows unauthenticated network attackers to access critical data and make limited unauthorized changes through HTTP if they can induce a victim to perform a crafted action. The CVSS 3.1 score is 6.9 (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N), and no public exploit was identified at time of analysis. Mandatory user interaction and high attack complexity constrain reliable exploitation, but the scope change means connected products and trust relationships may also be affected.

RemediationAI

Apply the Oracle Critical Patch Update October 2026 referenced at https://www.oracle.com/security-alerts/cpuoct2026.html to Oracle WebCenter Content 14.1.2.0.0; the provided data does not specify an exact fixed build, so verify the applicable patch level against Oracle's advisory before deployment. Until patched, restrict network and HTTP access to the Content Server to trusted users, VPN, or segmented networks, accepting reduced remote availability as a trade-off. Because exploitation requires human interaction, reinforce user awareness around unsolicited links and induced actions, but treat that as a supplementary control rather than a reliable mitigation. Monitor Content Server and downstream integration logs for anomalous unauthenticated requests and unexpected cross-product access, and coordinate patching with connected systems because the scope change may extend impact beyond WebCenter Content.

Affected VersionsENISA

Oracle WebCenter Content 14.1.2.0.0

Affected Packages

euvd oracle_webcenter_content 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

Oracle WebCenter Content is an enterprise content management platform, and the affected Content Server component exposes HTTP interfaces used for document management, workflow, and integration with other Fusion Middleware products. The CWE is not provided, but the vendor tag 'Authentication Bypass' together with the PR:N vector indicates the flaw lets an unauthenticated actor bypass intended access controls under specific conditions rather than through a straightforward deterministic request. The AC:H rating suggests exploitation depends on a race condition, precise timing, or a non-default state, while UI:R means the attacker cannot trigger the issue alone and must induce a victim to interact with a crafted link or action. The S:C scope change indicates a successful attack may cross a trust boundary and affect additional products connected to WebCenter Content, so downstream integrations should be considered when assessing exposure.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 6.9 MEDIUM
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
vuln.today AI 6.9 MEDIUM

Unauthenticated network HTTP reach (AV:N/PR:N) but difficult-to-exploit and interaction-dependent (AC:H/UI:R); scope change (S:C) with high confidentiality, low integrity, no availability impact per the description.

3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
4.0 AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

DescriptionCVE.org

Vulnerability in the Oracle WebCenter Content product of Oracle Fusion Middleware (component: Content Server). The supported version that is affected is 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Content. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle WebCenter Content, 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 WebCenter Content accessible data as well as unauthorized update, insert or delete access to some of Oracle WebCenter Content accessible data. CVSS 3.1 Base Score 6.9 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
enterprise Oracle ECM product, common in large orgs but not ubiquitous
Data Quality
4 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
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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