curl_cffi is the a Python binding for curl. Prior to 0.15.0, curl_cffi does not restrict requests to internal IP ranges, and follows redirects automatically via the underlying libcurl. Because of this, an attacker-controlled URL can redirect requests to internal services such as cloud metadata endpoints. In addition, curl_cffi’s TLS impersonation feature can make these requests appear as legitimate browser traffic, which may bypass certain network controls. This vulnerability is fixed in 0.15.0.
Exploitability
AV:NAC:LPR:NUI:NScope
S:CImpact
C:HI:NA:N8.6/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NInput Validation