CVE-2026-34305 Information disclosure in Oracle WebLogic Server

What is CVE-2026-34305?

CVE-2026-34305 is a high-severity vulnerability in Oracle Weblogic Server, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Web Services). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Weakness: CWE-200

Which versions are affected by CVE-2026-34305?

It affects 1 product.

Products include Oracle Weblogic Server.

How do I fix CVE-2026-34305?

No fix has been published for CVE-2026-34305 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-34305 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34305 exists.

Other vulnerabilities in Oracle Weblogic Server

• CVE-2020-14750 Oracle WebLogic Server Remote Code Execution Exploited Critical 9.8
• CVE-2020-14882 Oracle WebLogic Server Remote Code Execution Exploited Critical 9.8
• CVE-2020-14644 Oracle WebLogic Server Remote Code Execution Exploited Critical 9.8
• CVE-2020-2883 Oracle WebLogic Server Unspecified Exploited Critical 9.8
• CVE-2020-2551 Oracle Fusion Middleware Unspecified Exploited Critical 9.8

All Oracle Weblogic Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-wfvx-63xx-rq37.