CVE-2025-66405

Portkey.ai Gateway is a blazing fast AI Gateway with integrated guardrails. Prior to 1.14.0, the gateway determined the destination baseURL by prioritizing the value in the x-portkey-custom-host request header. The proxy route then appends the client-specified path to perform an external fetch. This can be maliciously used by users for SSRF attacks. This vulnerability is fixed in 1.14.0.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Portkey-AI/gateway/commit/b5a7825ba5f4e6918deb32d9969899ce2229a885	Patch
https://github.com/Portkey-AI/gateway/pull/1372	Issue Tracking
https://github.com/Portkey-AI/gateway/security/advisories/GHSA-hhh5-2cvx-vmfp	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:portkey:gateway:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-12-01 23:15

Updated : 2026-02-20 21:21

NVD link : CVE-2025-66405

Mitre link : CVE-2025-66405

CVE.ORG link : CVE-2025-66405

JSON object : View

Products Affected

portkey

gateway

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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