Vulnerability in Oracle Corporation Helidon

[ Description ]Official description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-grpc-server). Supported versions that are affected are 3.0.0-3.2.21. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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 7.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• NCSC-NL22 Oct 2026NCSC-2026-0448

  Vulnerabilities fixed in Oracle Fusion Middleware Translated from Dutch

  Probability/damage H/HCVE-2026-54513CVE-2026-56741CVE-2026-59649+191 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4078

  Oracle Fusion Middleware: Multiple vulnerabilities Translated from German

  CVE-2026-91212CVE-2023-43622CVE-2026-42779+191 more CVEs

[ References ]References

• www.oracle.com/security-alerts/cpuoct2026.html