Portkey AI Gateway 1.14.0 through 1.15.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to reach loopback and Docker host services because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is unset. Attackers can send /v1 requests with a crafted x-portkey-custom-host header, such as via the ollama provider, to make the gateway call internal services and return their responses.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/Portkey-AI/gateway
disclosure@vulncheck.com
https://github.com/Portkey-AI/gateway/blob/ca7712947ec8c0887803990b746740d36011…
disclosure@vulncheck.com
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/BJypv-aiMg
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/portkey-ai-gateway-1.14.0-through-1.15.2-s…
disclosure@vulncheck.com