Oracle Helidon 4.5.0 Imperative Web Server privileges management

Summaryinfo

A vulnerability identified as critical has been detected in Oracle Helidon 4.5.0. Affected by this issue is some unknown functionality of the component Imperative Web Server. Performing a manipulation results in privileges management. This vulnerability is known as CVE-2026-73896. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Oracle Helidon 4.5.0. It has been classified as critical. This affects some unknown functionality of the component Imperative Web Server. 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. The summary by CVE is:

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 6.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L).

It is possible to read the advisory at oracle.com. This vulnerability is uniquely identified as CVE-2026-73896 since 08/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/19/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

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

• 4.5.0

License

• commercial

Website

• Vendor: https://www.oracle.com

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