H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.
https://jvn.jp/en/jp/JVN84182676/index.html
https://github.com/h2o/h2o/issues/1544
Source: Mitre, NVD
Published: 2017-12-22
Updated: 2021-04-19
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High