Oracle Weblogic Server Proxy Plug-in 12.2.1.4.0/14.1.1.0.0/14.1.2.0.0 privileges management

Summaryinfo

A vulnerability was found in Oracle Weblogic Server Proxy Plug-in 12.2.1.4.0/14.1.1.0.0/14.1.2.0.0. It has been declared as critical. The affected element is an unknown function of the component WebLogic Server Proxy Plug-In for Third-Party Web Servers. The manipulation results in privileges management. This vulnerability is known as CVE-2026-87300. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Oracle Weblogic Server Proxy Plug-in 12.2.1.4.0/14.1.1.0.0/14.1.2.0.0. Affected is some unknown processing of the component WebLogic Server Proxy Plug-In for Third-Party Web Servers. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Vulnerability in the Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: WebLogic Server Proxy Plug-In for Third-Party Web Servers). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in 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 Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle Weblogic Server Proxy Plug-in accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).

The advisory is shared for download at oracle.com. This vulnerability is traded as CVE-2026-87300 since 09/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/21/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Application Server Software

Vendor

• Oracle

Name

• Weblogic Server Proxy Plug-in

Version

• 12.2.1.4.0
• 14.1.1.0.0
• 14.1.2.0.0

License

• commercial

Website

• Vendor: https://www.oracle.com

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion