Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain() applied ordinary suffix matching to domains such as 192.168.0.1, [::1], or 1, allowing cross-host cookie disclosure, cookie injection, or session fixation. This issue is fixed in version 7.12.3.
Exploitability
AV:NAC:HPR:NUI:RScope
S:CImpact
C:LI:LA:N4.7/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:NAuthentication
Other