Improper input validation in Helidon - CVE-2026-83280
Published: November 8, 2026
Vulnerability identifier: #VU162255
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-83280
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the helidon-webserver-http2 component in Helidon. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.
Affected software
Helidon
How to mitigate CVE-2026-83280
Install updates from vendor's website.