Oracle Helidon up to 4.5.5/27.0.0 helidon-common-concurrency-limits privileges management

Summaryinfo

A vulnerability, which was classified as critical, has been found in Oracle Helidon up to 4.5.5/27.0.0. This affects an unknown function of the component helidon-common-concurrency-limits. This manipulation causes privileges management. This vulnerability is tracked as CVE-2026-101569. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle Helidon up to 4.5.5/27.0.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component helidon-common-concurrency-limits. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity, and availability. The summary by CVE is:

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-common-concurrency-limits). Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).

The advisory is shared at oracle.com. This vulnerability is known as CVE-2026-101569 since 09/28/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Oracle

Name

• Helidon

Version

• 4.5.0
• 4.5.1
• 4.5.2
• 4.5.3
• 4.5.4
• 4.5.5
• 27.0

License

• commercial

Website

• Vendor: https://www.oracle.com

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