What is CVE-2026-83036?

CVE-2026-83036 is a critical-severity vulnerability in Oracle Corporation Webcenter Sites, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-09-15.

How severe is CVE-2026-83036?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Oracle Corporation Webcenter Sites

CVE-2026-83036

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).

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Oracle Corporation Webcenter Sites — versions 12.2.1.4.0, 14.1.2.0.0

Weakness classification (CWE)

References

secalert_us@oracle.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-83036?: CVE-2026-83036 is a critical-severity vulnerability in Oracle Corporation Webcenter Sites, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-09-15.
How severe is CVE-2026-83036?: Critical severity. CVSS v3 base score is 9.8 out of 10.