CVE-2026-101583
HighCVSS 7.0Summary
Vulnerability in Oracle Helidon (component helidon-common-mapper) versions 4.0.0-4.5.5 and 27.0.0. Difficult to exploit, allows an unauthenticated attacker with network access via HTTP to cause unauthorized modification of data, partial read access, and partial DOS.
Risk Assessment
Despite difficulty in exploitation, an attacker could modify critical data and cause partial denial of service. CVSS score of 7.0 indicates high risk to integrity and availability.
Recommendation
Update Helidon to a version outside the 4.0.0-4.5.5 and 27.0.0 range. Implement monitoring and restrict network access to the minimum necessary.
Other vulnerabilities in Oracle Helidon
See all- CVE-2026-101585High
Vulnerability in Oracle Helidon (component helidon-cors) versions 3.0.0-3.2.21. Easily exploitable by an unauthenticated attacker with network access via HTTP, leading to unauthorized modification and read access to data and impact on other products.
- CVE-2026-101579High
Vulnerability in Oracle Helidon (component helidon-grpc-server) versions 3.0.0-3.2.21. Easily exploitable by an unauthenticated attacker with network access via HTTP/2, leading to unauthorized modification and read access to data and impact on other products.
- CVE-2026-101572High
Vulnerability in Oracle Helidon (component helidon-webclient-http2) versions 4.0.0-4.5.5 and 27.0.0. Easily exploitable by an unauthenticated attacker with network access via HTTP/2, leading to a hang or frequently repeatable crash (complete DOS).
Original NVD description (English source)
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-common-mapper). Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP 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 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 7.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS