Description
Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Composer). 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 Portal. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. 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).
Published: 2026-09-15
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote Compromise
Action: Immediate Patch
AI Analysis

Impact

A vulnerability in the Oracle WebCenter Portal Composer component allows an attacker who can reach the application over HTTP to bypass authentication requirements (CWE‑287 and CWE‑306). The flaw is easily exploitable because no credentials are needed, and exploitation results in full takeover of the portal, compromising confidentiality, integrity, and availability as indicated by the CVSS 3.1 score of 9.8.

Affected Systems

Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0 are affected. The flaw resides in the Composer component of the Fusion Middleware stack.

Risk and Exploitability

Although the EPSS score is below 1 percent and the vulnerability is not listed in the CISA KEV catalog, the high CVSS score and the ability to be exploited without authentication make this flaw a high‑risk surface. An unauthenticated attacker can gain full control simply by sending a malicious HTTP request, with no additional access or privileged context required.

Generated by OpenCVE AI on September 17, 2026 at 05:04 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Oracle WebCenter Portal to the latest patched release that addresses CVE‑2026‑73956.
  • Restrict HTTP access to the portal by allowing only trusted IP ranges or VPN endpoints, mitigating network‑level exploitation.
  • If an immediate upgrade is not possible, disable the Composer component or apply application‑level access controls to block unauthenticated requests.

Generated by OpenCVE AI on September 17, 2026 at 05:04 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 17 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote WebCenter Portal Compromise via Composer

Thu, 17 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 15 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287
CWE-306

Tue, 15 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Composer). 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 Portal. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. 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).
First Time appeared Oracle
Oracle webcenter Portal
CPEs cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:webcenter_portal:14.1.2.0.0:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle webcenter Portal
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Oracle Webcenter Portal
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-09-15T22:54:39.042Z

Reserved: 2026-08-13T18:41:45.893Z

Link: CVE-2026-73956

cve-icon Vulnrichment

Updated: 2026-09-15T22:46:24.419Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-15T20:17:46.780

Modified: 2026-09-16T19:42:12.090

Link: CVE-2026-73956

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-17T05:15:19Z

Weaknesses
  • CWE-287

    Improper Authentication

  • CWE-306

    Missing Authentication for Critical Function