CVE-2025-66405
Critical · 9.8CVSS
9.8
EPSS
0.4%
Published
Dec 1, 2025
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @portkey-ai/gateway | 0 | 1.14.0 |
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