CVE-2026-73900 Information disclosure in Helidon
Unauthenticated attackers can read sensitive data from Helidon web servers via HTTP requests.
- 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-2026-73900?
CVE-2026-73900 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 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-73900?
It affects 1 product.
Products include Oracle Helidon.
How do I fix CVE-2026-73900?
No fix has been published for CVE-2026-73900 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73900 being exploited?
There is no known exploitation of CVE-2026-73900 in the wild and no public exploit code.
Other vulnerabilities in Oracle Helidon
Sources
Also known as GHSA-2c9h-jvvw-2c3f.