Oracle Helidon 4.5.0 Imperative Web Server improper authorization

Summaryinfo

A vulnerability was found in Oracle Helidon 4.5.0 and classified as critical. This affects an unknown part of the component Imperative Web Server. Executing a manipulation can lead to improper authorization. The identification of this vulnerability is CVE-2026-71110. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Oracle Helidon 4.5.0. This vulnerability affects an unknown code of the component Imperative Web Server. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect 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 4.5.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

The advisory is shared for download at oracle.com. This vulnerability was named CVE-2026-71110 since 08/05/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/19/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

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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