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Oracle WebCenter Content CVE-2026-91262

| EUVDEUVD-2026-106516 MEDIUM
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-5v4r-pqc2-qv3c
5.4
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
    Deliver crafted link to WebCenter user
  2. Delivery
    Victim interacts via browser
  3. Exploit
    Trigger request in user context
  4. Execution
    Read subset of content data
  5. Impact
    Insert/update/delete accessible 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 luring a human victim other than the attacker to interact (UI:R) - e.g., clicking a crafted link or visiting a malicious page - against an internet- or network-reachable Oracle WebCenter Content Content Server running version 14.1.2.0.0. No attacker authentication is needed (PR:N), but the hard limiting factor is this mandatory out-of-band user interaction: with no victim action, the attack does not succeed. Impact is further bounded to a subset of accessible data for reads and 'some' data for writes, with no availability impact, so this cannot by itself cause service disruption.

Impact

This is a moderate-severity issue (CVSS 3.1 base 5.4) whose signals point consistently toward limited real-world urgency rather than a drop-everything priority. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N) describes a network-reachable, low-complexity, unauthenticated vector, but the mandatory user-interaction requirement - the description explicitly states 'Successful attacks require human interaction from a person other than the attacker' - materially gates exploitation and is the single biggest brake on mass exploitation. Impact is partial: low confidentiality (read of a subset of data) and low integrity (update/insert/delete of some data), with no availability impact, so this is not a full-compromise or RCE bug. No EPSS score, CISA KEV listing, or public POC is present in the supplied data, so there is no public exploit identified at time of analysis and no evidence of active exploitation. The only notable conflict is the input tag 'Authentication Bypass', which does not match the vulnerability's actual shape: the CVSS already assumes an unauthenticated attacker (PR:N) and relies on tricking a legitimate user (UI:R), which is characteristic of a cross-site/CSRF-style flaw rather than a true authentication bypass - this mislabel should not drive prioritization. Net: a legitimately patch-worthy Oracle CPU item, but a mid-tier priority behind unauthenticated no-interaction criticals.

Exploit ScenarioDerived

An attacker crafts a malicious HTTP link or web page and, through phishing or social engineering, induces an authenticated Oracle WebCenter Content user to interact with it, causing requests to be issued in that user's context. This yields read access to a subset of content and the ability to update, insert, or delete some accessible data. No public exploit code is identified in the available data, and exploitation depends entirely on the targeted user taking the bait.

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 (Content Server component) exposes an HTTP-reachable path that lets an unauthenticated remote attacker cause limited unauthorized reads and writes of Content Server data - but only if a human victim is lured into performing an interaction (CVSS 3.1 5.4, AV:N/AC:L/PR:N/UI:R/C:L/I:L/A:N). The mandatory user-interaction prerequisite and the bounded confidentiality/integrity impact (no availability effect) keep this a moderate-priority item rather than an emergency: without victim action the attack does not succeed, and the flaw cannot by itself disrupt service. No public exploit code or confirmed active exploitation was identified at time of analysis; Oracle addressed the issue through its Critical Patch Update referenced in the October 2026 security advisory.

RemediationAI

Apply the Oracle Critical Patch Update referenced in the October 2026 security advisory (https://www.oracle.com/security-alerts/cpuoct2026.html) to the Content Server component of WebCenter Content 14.1.2.0.0; patch availability is confirmed per vendor advisory but the exact patched build number is not stated in the supplied data, so verify the target version in the advisory before upgrading. Because exploitation hinges on a victim performing an interaction (UI:R), the highest-value interim control is reducing who can be reached: place Content Server behind a reverse proxy, VPN or zero-trust gateway and remove direct internet exposure - trade-off is added friction and potential breakage of external partner or mobile workflows that rely on direct HTTP access. Pair that with mail and web gateway filtering plus user awareness training aimed at crafted links pointing to Content Server hosts, accepting that awareness controls are probabilistic and do not stop a determined lure. Network segmentation restricting Content Server HTTP ports to known client ranges limits the attacker population but requires ongoing ACL maintenance. Enable and review Content Server audit logging for anomalous insert/update/delete activity and unexpected read patterns from unauthenticated or low-privilege sessions; detection is retrospective, but the integrity impact means unauthorized writes should be reversible via content versioning and backups, which should be verified and tested before an incident.

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

The affected technology is the Content Server subsystem of Oracle Fusion Middleware's WebCenter Content, an enterprise document/records management platform that exposes HTTP endpoints for content contribution, retrieval and workflow. The vulnerability is network-reachable (AV:N), requires no attacker credentials (PR:N) and is trivially triggerable once a victim cooperates (AC:L), but is gated by UI:R - the exploit path depends on coercing a person other than the attacker into an interaction, such as following a crafted link or loading attacker-controlled content in a browser session that already holds Content Server context. That combination of PR:N with UI:R and matched low confidentiality and integrity impact is the classic signature of a client-side/request-forgery-style flaw in which the victim's own session or browser becomes the delivery vehicle for unauthorized reads and inserts/updates/deletes against a subset of Content Server data. No CWE identifier was supplied by the reporting source, so the precise root-cause class (e.g., improper neutralization of user-controlled input versus missing request-origin validation) is not confirmed from the available data; the attacker gains constrained read access plus the ability to modify some accessible records, and there is no availability impact. EUVD corroborates the single affected build, 14.1.2.0.0, and no CPE strings were provided in the input.

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Severity by source

Vendor (oracle) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
vuln.today AI 5.4 MEDIUM

Network-reachable and unauthenticated (AV:N/PR:N) but gated by required victim interaction (UI:R); partial read and write give C:L/I:L, with no availability impact (A:N).

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
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. Easily exploitable 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. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle WebCenter Content accessible data as well as unauthorized read access to a subset of Oracle WebCenter Content accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
enterprise ECM platform, 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

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
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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