EUVD-2025-200120

| CVE-2025-66405 CRITICAL
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
EUVD ID Assigned
Mar 15, 2026 - 13:34 euvd
EUVD-2025-200120
Analysis Generated
Mar 15, 2026 - 13:34 vuln.today
Patch Released
Mar 15, 2026 - 13:34 nvd
Patch available
CVE Published
Dec 01, 2025 - 23:15 nvd
CRITICAL 9.8

Description

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.

Analysis

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.

Technical Context

Server-Side Request Forgery allows an attacker to induce the server to make HTTP requests to arbitrary destinations, including internal services. This vulnerability is classified as Server-Side Request Forgery (SSRF) (CWE-918).

Affected Products

Affected products: Portkey Gateway

Remediation

A vendor patch is available — apply it immediately. Validate and whitelist allowed URLs and IP ranges. Block requests to internal/private IP ranges. Use network segmentation to limit server-side request scope.

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: 0

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EUVD-2025-200120 vulnerability details – vuln.today

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