The HttpOnly flag is set to false on the PHPSESSION cookie. Therefore, the cookie can be accessed by other sources such as JavaScript.
Exploitability
AV:NAC:HPR:NUI:RScope
S:UImpact
C:HI:NA:N5.3/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:NOther