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CVE-2025-66405— Portkey.ai Gateway: Server-Side Request Forgery (SSRF) in Custom Host

Quick assessment

Affected
Portkey-AI gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AI Gateway是Portkey.ai开源的一个AI网关。 AI Gateway 1.14.0之前版本存在代码问题漏洞，该漏洞源于SSRF漏洞，可能导致外部资源访问。

AI Predicted 9.1 Difficulty: Easy EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1105 · Ingress Tool Transfer
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I. Basic Information for CVE-2025-66405

Vulnerability Information
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Vulnerability Title
Portkey.ai Gateway: Server-Side Request Forgery (SSRF) in Custom Host
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
AI Gateway 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AI Gateway是Portkey.ai开源的一个AI网关。 AI Gateway 1.14.0之前版本存在代码问题漏洞，该漏洞源于SSRF漏洞，可能导致外部资源访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Portkey-AI gateway < 1.14.0 -

II. Public POCs for CVE-2025-66405

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III. Intelligence Information for CVE-2025-66405

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IV. Related Vulnerabilities

Same product: gateway
Same vendor: Portkey-AI
Same weakness: CWE-918

V. Comments for CVE-2025-66405

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