Portkey AI Gateway through 1.15.2 contains a server-side request forgery vulnerability in the /v1/proxy/* route that lacks requestValidator middleware. Attackers can set the x-portkey-custom-host header to internal addresses and forward requests with Authorization headers to reach internal services and exfiltrate provider API keys.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Portkey-ai
  • Gateway

No data.

No data.

References
Link Providers
https://github.com/Portkey-AI/gateway cve-icon cve-icon
https://github.com/Portkey-AI/gateway/blob/669825cbe89ee51569918b8f78a9db486fd69dd4/src/index.ts cve-icon cve-icon
https://github.com/Portkey-AI/gateway/issues/1718 cve-icon cve-icon
https://www.vulncheck.com/advisories/portkey-ai-gateway-server-side-request-forgery-via-v1-proxy cve-icon cve-icon
History

Mon, 31 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 28 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Portkey-ai
Portkey-ai gateway
Vendors & Products Portkey-ai
Portkey-ai gateway

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Portkey AI Gateway through 1.15.2 contains a server-side request forgery vulnerability in the /v1/proxy/* route that lacks requestValidator middleware. Attackers can set the x-portkey-custom-host header to internal addresses and forward requests with Authorization headers to reach internal services and exfiltrate provider API keys.
Title Portkey AI Gateway Server-Side Request Forgery via /v1/proxy/*
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-28T16:18:53.484Z

Updated: 2026-08-31T18:44:29.659Z

Reserved: 2026-08-28T11:12:38.463Z

Link: CVE-2026-82270

cve-icon Vulnrichment

Updated: 2026-08-31T18:44:25.622Z

cve-icon NVD

Status : Received

Published: 2026-08-28T20:20:17.797

Modified: 2026-08-31T19:17:17.097

Link: CVE-2026-82270

cve-icon Redhat

No data.