CVE-2026-73896 Information disclosure in Helidon
Unauthenticated attackers can read sensitive data and cause partial denial of service in Helidon via HTTP/2.
- 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-2026-73896?
CVE-2026-73896 is a medium-severity 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 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in 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 6.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L).
Weakness: CWE-284
Which versions are affected by CVE-2026-73896?
It affects 1 product.
Products include Oracle Helidon.
How do I fix CVE-2026-73896?
No fix has been published for CVE-2026-73896 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73896 being exploited?
There is no known exploitation of CVE-2026-73896 in the wild and no public exploit code.
Other vulnerabilities in Oracle Helidon
Sources
Also known as GHSA-3fqv-m5ww-82mr.