Oracle Helidon 3.2.18 Imperative Web Server privileges management

Summaryinfo

A vulnerability classified as critical was found in Oracle Helidon 3.2.18. This affects an unknown function of the component Imperative Web Server. Such manipulation leads to privileges management. This vulnerability is listed as CVE-2026-73873. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Oracle Helidon 3.2.18 and classified as critical. Affected by this issue is an unknown function of the component Imperative Web Server. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 3.2.18. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

The advisory is available at oracle.com. This vulnerability is handled as CVE-2026-73873 since 08/13/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/19/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Oracle

Name

• Helidon

Version

• 3.2.18

License

• commercial

Website

• Vendor: https://www.oracle.com

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