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Oracle WebCenter Content EUVDEUVD-2026-106465

| CVE-2026-91210 MEDIUM
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-774f-5m6r-9wfm
6.5
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
    Authenticate with low-privileged account
  2. Delivery
    Craft malicious content via HTTP
  3. Exploit
    Lure privileged user to interact
  4. Execution
    Exploit crosses security scope boundary
  5. Impact
    Access or modify critical WebCenter data

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 an authenticated low-privileged account on Oracle WebCenter Content 14.1.2.0.0 (PR:L) plus interaction from a separate human other than the attacker (UI:R), reachable over the network via HTTP (AV:N). It is rated difficult to exploit (AC:H), implying race conditions, specific timing, or non-trivial preconditions beyond the attacker's control. The scope change (S:C) means successful attacks can impact additional Oracle products beyond WebCenter Content itself. Limiting factors: valid credentials, mandatory victim interaction, and high complexity substantially reduce realistic exploitability against hardened deployments.

Impact

This is a moderate-priority issue whose CVSS 3.1 base score of 6.5 is driven primarily by the scope change (S:C) and high confidentiality impact (C:H), not by ease of exploitation. The vector itself tempers the urgency: AC:H (Oracle explicitly describes it as 'difficult to exploit'), PR:L (a valid low-privileged account is required), and UI:R (a separate, non-attacker human must interact) are three independent gating conditions that each lower the realistic probability of mass exploitation. No EPSS score, KEV listing, or POC was provided in the intelligence set, which is consistent with this being a vendor-coordinated Oracle CPU disclosure rather than an actively exploited bug. There are no conflicting severity signals, but one metadata conflict should be flagged: the 'Authentication Bypass' tag contradicts the CVSS vector, which requires authentication (PR:L) rather than bypassing it - verify tagging before using it for detection logic. Overall, treat this as a routine-patch-cycle item for WebCenter Content operators rather than an emergency.

Exploit ScenarioDerived

An attacker holding a low-privileged Oracle WebCenter Content account crafts malicious content or a request and lures a different, more-privileged user into interacting with it over HTTP. Because the vulnerability causes a scope change, the resulting action can cross a security boundary and expose or alter data in adjacent Oracle components. No public exploit code was identified in the provided data, and the high attack complexity means exploitation is non-trivial.

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

Critical data exposure in Oracle WebCenter Content 14.1.2.0.0 requires a low-privileged authenticated attacker, network access via HTTP, and interaction by a separate user, and is rated difficult to exploit. Successful exploitation can give unauthorized read access to critical WebCenter Content data and limited update, insert, or delete access, with scope change potentially affecting additional Oracle products. No public exploit code was identified at time of analysis.

RemediationAI

Apply the Oracle Critical Patch Update October 2026 fix for Oracle WebCenter Content 14.1.2.0.0; the supplied data does not specify an exact patched build, so confirm the minimum fixed version in Oracle's advisory before deployment. Until patched, restrict HTTP access to the Content Server to trusted networks and required users, accepting possible disruption for remote or partner access. Enforce least privilege and remove unnecessary low-privileged accounts because exploitation requires valid credentials, though this requires ongoing account governance. Because exploitation requires victim interaction, warn users against following untrusted links or opening unsolicited content; this is a procedural control and not foolproof. Monitor Content Server and adjacent Oracle products for anomalous access or changes because the scope change indicates possible impact beyond WebCenter Content. Vendor advisory: https://www.oracle.com/security-alerts/cpuoct2026.html.

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 product within Oracle Fusion Middleware, and this issue affects the Content Server component in version 14.1.2.0.0. No CWE is assigned in the supplied data, so the precise root-cause class cannot be confirmed; the authoritative CVSS 3.1 vector is AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N, indicating a network-reachable HTTP attack that requires a valid low-privileged session and separate human interaction, has high attack complexity, and changes scope so impact may extend to additional Oracle products. The source tags mention Authentication Bypass, but the vector requires PR:L, so the authoritative assessment treats authentication as required rather than unauthenticated bypass. No CPE strings were provided; EUVD lists Oracle WebCenter Content 14.1.2.0.0 as affected.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 6.5 MEDIUM
AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
vuln.today AI 6.5 MEDIUM

Network HTTP vector (AV:N) but authenticated (PR:L), victim interaction (UI:R) and difficult preconditions (AC:H); scope change (S:C) with high confidentiality and low integrity impact, no availability effect.

3.1 AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
4.0 AV:N/AC:H/AT:N/PR:L/UI:P/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
Low
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 low privileged 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 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Prevalence
Medium
enterprise content management suite, common in large orgs but not everywhere
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

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
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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