H2O is vulnerable to stored XSS vulnerability which can lead to a Local File Include attack.
https://huntr.com/bounties/9881569f-dc2a-437e-86b0-20d4b70ae7af
Source: Mitre, NVD
Published: 2023-11-16
Updated: 2023-11-28
Base Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N
Severity: Medium
Base Score: 5.4
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00236