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Oracle WebCenter Sites CVE-2026-35296

| EUVDEUVD-2026-37423 CRITICAL
Missing Authentication for Critical Function (CWE-306)
2026-06-16 oracle
9.8
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 exposed WebCenter Sites host
  2. Delivery
    Send crafted HTTP request
  3. Exploit
    Exploit unauthenticated server-side flaw
  4. Execution
    Execute attacker-controlled logic
  5. Impact
    Achieve full product takeover

Vulnerability Assessment

Weakness
CWE
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

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

Exploitation Conditions

No special conditions - remote unauthenticated exploitation over HTTP against default configurations of Oracle WebCenter Sites versions 12.2.1.4.0 and 14.1.2.0.0, per CVSS AV:N/AC:L/PR:N/UI:N. The practical limiters are version (only those two releases are listed as affected) and network reachability of the WebCenter Sites HTTP listener, which is often fronted by WebLogic and may sit behind a reverse proxy or WAF in mature deployments; no specific feature toggle or non-default mode is required by Oracle's description.

Impact

All available signals point to high real-world priority: CVSS 3.1 of 9.8 with AV:N/AC:L/PR:N/UI:N means an unauthenticated remote attacker can exploit the issue over HTTP with low complexity and no user interaction, and Oracle explicitly characterizes successful attacks as 'takeover' of the product (C:H/I:H/A:H). EPSS data was not provided in the input, and the vulnerability is not flagged as KEV at the time of analysis, so there is no confirmation of active exploitation. POC availability is also unknown from the supplied references. Oracle WebCenter Sites historically appears in CISA KEV after CPU disclosures, so the absence of EPSS and KEV signals here is more likely a data-freshness gap than evidence of low real-world risk, and this CVE should be treated as a priority patch.

Exploit ScenarioDerived

An attacker locates an internet-exposed Oracle WebCenter Sites instance (commonly fronted by WebLogic) and sends a single crafted HTTP request to a vulnerable endpoint, achieving full product takeover without credentials or user interaction. Because the issue is network-reachable and low-complexity, mass scanning followed by automated exploitation against unpatched 12.2.1.4.0 and 14.1.2.0.0 deployments is the realistic threat model once details or a POC emerge.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 16, 2026

Remote takeover of Oracle WebCenter Sites 12.2.1.4.0 and 14.1.2.0.0 is possible by unauthenticated attackers over HTTP, with full compromise of confidentiality, integrity, and availability per Oracle's June 2026 Critical Patch Update. The CVSS 3.1 base score of 9.8 reflects network-reachable, low-complexity exploitation with no user interaction, placing this among the most severe Fusion Middleware issues in the cycle. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

RemediationAI

Apply the patches shipped in the Oracle Critical Patch Update of June 2026 for Oracle WebCenter Sites 12.2.1.4.0 and 14.1.2.0.0 as documented at https://www.oracle.com/security-alerts/cspujun2026.html; Oracle does not publish point-fix versions outside the CPU, so the CPU patch itself is the authoritative remediation. Until the CPU can be staged through change control, restrict HTTP and HTTPS access to WebCenter Sites management, satellite, and REST endpoints to trusted networks via WAF rules or network ACLs, and place the deployment behind an authenticating reverse proxy; this will break public preview and unauthenticated content delivery flows if those are in use, so verify which paths must remain externally reachable. Increase logging on the WebLogic and WebCenter Sites HTTP tiers to capture anomalous request patterns while the patch is pending.

Affected VersionsENISA

Oracle WebCenter Sites 14.1.2.0.0
Oracle WebCenter Sites 12.2.1.4.0

Affected Packages

euvd oracle_webcenter_sites 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 Sites is the Java-based web experience management (WEM) platform within Oracle Fusion Middleware, used to author, target, and deliver web content across customer-facing sites. The affected versions (12.2.1.4.0 and 14.1.2.0.0) run on top of WebLogic and expose multiple HTTP-facing endpoints (content management, satellite servers, REST APIs). No CWE is published by Oracle for this advisory, which is consistent with Oracle's standard CPU disclosure practice of withholding root-cause classification; the CVSS vector (AV:N/AC:L/PR:N/UI:N) combined with 'takeover' language strongly implies a server-side flaw reachable through normal HTTP request handling rather than a client-side or configuration-dependent bug.

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Severity by source

Vendor (oracle) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Oracle describes unauthenticated HTTP-reachable takeover with no user interaction, justifying AV:N/AC:L/PR:N/UI:N and full C:H/I:H/A:H with unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle WebCenter Sites 12.2.1.4.0 and 14.1.2.0.0 contain a critical vulnerability (CVE-2026-35296, CVSS 9.8) enabling unauthenticated remote system takeover, creating immediate risk of complete data loss and operational disruption for organizations operating these versions. No patch currently available from Oracle. This represents severe risk to content management infrastructure and requires urgent compensating controls pending patch release.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Network segmentation-restrict HTTP/HTTPS access to WebCenter Sites 12.2.1.4.0 and 14.1.2.0.0 instances to trusted IP ranges via firewall; (2) Web Application Firewall-deploy rules to detect suspicious exploitation patterns once available; (3) Enhanced monitoring-log and alert on administrative access attempts, data requests, and exfiltration indicators; (4) Disable non-critical services-reduce attack surface by disabling unnecessary WebCenter Sites modules; (5) Contingency planning-evaluate migration to unaffected content management platforms.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
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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