Quick answers
- Is CVE-2026-71167 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-71167 being exploited in the wild.
- How severe is CVE-2026-71167?
- Critical severity, with a CVSS score of 9.4, published 18 August 2026.
- Which products and versions are affected?
- Oracle Helidon 4.0.0-4.4.1.
- Is there a fix for CVE-2026-71167?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-71167 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-71167?
- Check whether you run Oracle Helidon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is an unauthenticated remote vulnerability in the Helidon Imperative Web Server component affecting versions 4.0.0 through 4.4.1. The vulnerability can be exploited via HTTP by a network-based attacker without requiring authentication, elevated privileges, or user interaction. Successful exploitation results in unauthorized read, creation, modification, and deletion of critical data accessible to Helidon, as well as the ability to trigger partial denial of service conditions. The CVSS 3.1 vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L) reflects the high impact across confidentiality, integrity, and availability. Patches are expected from Oracle; affected systems should update to versions beyond 4.4.1 when available.
Affected products
- Oracle Helidon 4.0.0-4.4.1
Timeline
- 2026-08-18: disclosed