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Http Server CVE-2026-21962

CRITICAL
Improper Access Control (CWE-284)
2026-01-20 secalert_us@oracle.com
10.0
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
    Send HTTP request to proxy plug-in
  2. Exploit
    Bypass authentication via CWE-284 flaw
  3. Execution
    Access WebLogic backend resources
  4. Impact
    Exfiltrate sensitive 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

Oracle HTTP Server with WebLogic Server Proxy Plug-in (versions 12.2.1.4.0, 14.1.1.0.0, or 14.1.2.0.0) installed and enabled. Proxy plug-in must be accessible via HTTP from attacker network. No authentication required; default installations vulnerable.

Impact

CVSS 10.0 with patch available. Oracle middleware is widely deployed in enterprise environments. Full compromise of the web tier provides access to backend application servers and databases.

Exploit ScenarioDerived

An unauthenticated attacker exploits the access control flaw in the Oracle HTTP Server proxy plug-in to bypass authentication and gain administrative access to the WebLogic Server, from which they pivot to backend databases and application services.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.
Exploited in the wild (CISA KEV) Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Oracle HTTP Server and WebLogic Server Proxy Plug-in have a CVSS 10.0 access control vulnerability allowing unauthenticated network attackers to fully compromise the middleware layer.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:54 CVSS 10.0

CVSS 10.0 access control bypass in Oracle HTTP Server/WebLogic Proxy enables full middleware takeover.

RemediationAI

Apply Oracle Critical Patch Update immediately. Implement WAF rules. Monitor for unauthorized access to WebLogic administration interfaces.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Oracle Fusion Middleware's HTTP Server and WebLogic Server Proxy Plug-in have a CWE-284 access control vulnerability that allows unauthenticated attackers to compromise the middleware component with no user interaction required.

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  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 10.0 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

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

Lifecycle Timeline

3
Added to CISA KEV
Aug 24, 2026 - 18:47 CISA
Patch released
Feb 03, 2026 - 00:16 nvd
Patch available
CVE Published
Jan 20, 2026 - 22:15 nvd
CRITICAL 10.0

DescriptionCVE.org

Vulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data. Note: Affected version for Weblogic Server Proxy Plug-in for IIS is 12.2.1.4.0 only. CVSS 3.1 Base Score 10.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

CVE-2026-21962 presents critical security risk, a improper access control vulnerability rated CVSS 10.0. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. A patch is available and should be applied immediately given the critical severity.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Restrict access to affected endpoints; (2) Implement additional authorization checks; (3) Enable audit logging.

Threat Intelligence Overview

Threat Score
5.0/10
Composite threat intelligence
EPSS Score
0.0%
Top 92% exploitable
Exploit
POC
Public exploit code exists
Data Quality
6 sources
Confidence: High

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 Yes
Public POC Yes
EPSS 0.0%
Patch available Yes
Active threat Yes
Deciding rule
In CISA KEV with patch available
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
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

120
Low Medium High Critical
KEV: +50
EPSS: 0
CVSS: +50
PoC: +20
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.

Affected Products (CPE)CVE.org

cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:14.1.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.2.0.0:*:*:*:*:*:*:*
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CVE-2017-9798 HIGH POC
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CVE-2013-2566 MEDIUM POC
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CVE-2014-0226 MEDIUM POC
6.8 Jul 20

Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denia

CVE-2016-8740 HIGH POC
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The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2

CVE-2020-1967 HIGH POC
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Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due

CVE-2013-5704 MEDIUM POC
5.0 Apr 15

The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directiv

CVE-2013-2249 HIGH POC
7.5 Jul 23

mod_session_dbd.c in the mod_session_dbd module in the Apache HTTP Server before 2.4.5 proceeds with save operations for

CVE-2016-5387 HIGH
8.1 Jul 19

The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from t

CVE-2017-7668 HIGH
7.5 Jun 20

The HTTP strict parsing changes added in Apache httpd 2.2.32 and 2.4.24 introduced a bug in token list parsing, which al

CVE-2017-3169 CRITICAL POC
9.8 Jun 20

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party mod

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