CVE-2026-71161 Denial of service in Helidon
An unauthenticated attacker can cause a partial denial of service in the Helidon web server via network access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71161?
CVE-2026-71161 is a medium-severity denial of service vulnerability in Oracle Helidon, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Weakness: CWE-284
Which versions are affected by CVE-2026-71161?
It affects 1 product.
Products include Oracle Helidon.
How do I fix CVE-2026-71161?
No fix has been published for CVE-2026-71161 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-71161 being exploited?
There is no known exploitation of CVE-2026-71161 in the wild and no public exploit code.
Other vulnerabilities in Oracle Helidon
Sources
Also known as GHSA-qhvm-w52f-fhx5.