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Oracle WebCenter Content CVE-2026-91261

| EUVDEUVD-2026-106515 LOW
Information Exposure (CWE-200)
2026-10-20 secalert_us@oracle.com GHSA-rcg4-q8c6-3w4p
3.1
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. Exploit
    Send crafted HTTP request to Content Server
  3. Execution
    Win high-complexity race/condition
  4. Impact
    Read unauthorized subset of content data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

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) a valid low-privileged account on the target Oracle WebCenter Content 14.1.2.0.0 Content Server (PR:L - not unauthenticated despite the misleading tag), and (2) satisfying a high-complexity condition that Oracle itself describes as 'difficult to exploit' (AC:H), meaning success is not reliable and likely depends on specific timing or state the attacker cannot fully control. No user interaction is needed (UI:N) and the attack is deliverable remotely over HTTP (AV:N). Limiting factors: the mandatory pre-existing authenticated access, the high attack complexity, the narrow outcome (read access to only a subset of data, no write or availability impact), and that only version 14.1.2.0.0 is listed as affected.

Impact

This is a genuinely low-priority vulnerability across nearly every signal. The vendor CVSS 3.1 score is only 3.1 (Low), and the vector (AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N) confirms why: although it is reachable over the network via HTTP, Oracle explicitly states it is 'difficult to exploit' (AC:H), requires an already-authenticated low-privileged account (PR:L), and yields only limited, read-only access to a subset of data (C:L; no integrity or availability impact). No EPSS score was provided in the input, so exploitation probability cannot be quantified. There is no CISA KEV listing and no public proof-of-concept referenced, so this is neither known-exploited nor known to have public exploit code. No SSVC decision data was supplied. The one notable conflict is the input Tag 'Authentication Bypass', which contradicts the CVSS vector and description: a true authentication bypass would imply PR:N and broader impact, whereas this flaw presupposes an authenticated low-privileged attacker and leaks only a subset of data - the tag appears mislabeled and should not be used to escalate priority. Net assessment: a low-severity information-disclosure issue suitable for routine patching in the next Oracle CPU cycle, not an emergency.

Exploit ScenarioDerived

An attacker who already holds a valid low-privileged account on an Oracle WebCenter Content 14.1.2.0.0 instance sends specially crafted HTTP requests to the Content Server component, winning a difficult-to-trigger condition (AC:H) that returns a subset of content data they should not be able to read. No public exploit code is referenced, and success is probabilistic rather than reliable given the high attack complexity.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
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 of Oracle Fusion Middleware) allows a low-privileged authenticated user with network access over HTTP to read a limited subset of content the account should not be able to see, but only when a high-complexity condition is satisfied - Oracle itself classifies the issue as 'difficult to exploit.' The impact is confidentiality-only (CVSS 3.1 base score 3.1, AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N), with no write, integrity, or availability effect, and exploitation requires a pre-existing valid account despite a third-party tag labeling it an authentication bypass. No public exploit code or confirmed active exploitation (CISA KEV) was identified in the available intelligence at time of analysis, and this is a genuinely low-priority issue across nearly every risk signal.

RemediationAI

Apply the fix from Oracle's October 2026 Critical Patch Update advisory (https://www.oracle.com/security-alerts/cpuoct2026.html), which is the vendor channel for WebCenter Content 14.1.2.0.0; no exact patched build number is published in the supplied intelligence, so confirm the minimum CPU/patch-set level in My Oracle Support against your installed 14.1.2.0.0 build before closing the finding (patch status: patch available per vendor advisory). Because exploitation requires a valid low-privileged account plus a hard-to-satisfy condition, the practical risk reduction levers are exposure and privilege based: restrict HTTP access to the Content Server to trusted network ranges via firewall ACLs or a reverse proxy, accepting that this breaks legitimate external/partner access workflows; enforce least privilege and periodic review of WebCenter Content accounts and roles, removing dormant or over-provisioned users, with the trade-off of added administrative overhead; and monitor Content Server access logs for anomalous retrieval patterns from low-privileged accounts. Oracle CPUs typically ship without workarounds, so no vendor-supported configuration toggle is documented for this issue - do not attempt to disable core Content Server retrieval features as a substitute for patching. Given the low severity and absence of public exploit code or KEV listing, emergency out-of-band action is not warranted; fold the update into the next scheduled patch cycle.

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

WebCenter Content is Oracle's enterprise content and document management platform; the Content Server component handles document ingestion, storage, metadata search, and HTTP-based retrieval for authenticated users. This CVE is an information-disclosure weakness in how the Content Server enforces access boundaries on a subset of stored content: the CVSS vector (AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N) describes a remote, network-delivered attack over HTTP that requires an attacker to already hold a valid low-privileged account (PR:L) and to satisfy a high-complexity precondition (AC:H) that Oracle describes as difficult to reproduce reliably - typically a race, ordering, or specific object-state dependency the attacker cannot fully control. No user interaction is required and the scope remains unchanged, so the flaw does not let the attacker escape the Content Server's security authority; the outcome is bounded unauthorized read access to only a subset of WebCenter Content data. No CWE was assigned in the supplied data, and Oracle Critical Patch Update advisories deliberately withhold root-cause detail until customers have had time to patch, so the precise code defect (for example an authorization check applied inconsistently to a particular content-retrieval path) is not publicly documented. Note the external 'Authentication Bypass' tag conflicts with the assessed vector: PR:L means an account is mandatory, so this is an authorization/information-disclosure flaw, not a bypass of authentication.

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Severity by source

Vendor (oracle) PRIMARY 3.1 LOW
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 3.1 LOW

Remote HTTP reach (AV:N) but vendor-stated difficult exploitation (AC:H) and a required low-privileged account (PR:L); only a limited confidentiality leak, so C:L and I/A:N.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
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 of this vulnerability can result in unauthorized read access to a subset of Oracle WebCenter Content accessible data. CVSS 3.1 Base Score 3.1 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 87% 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 LOW
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
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
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Low

Priority Score

16
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +16
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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