---
id: CVE-2026-82270
title: >-
  Portkey AI Gateway through 1.15.2 contains a server-side request forgery
  vulnerability in the /v1/proxy/* route that lacks requestValidator middleware
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: Portkey-AI
product: '@portkey-ai/gateway'
affected:
  - '@portkey-ai/gateway >= 1.14.0 <= 1.15.2'
published: '2026-08-28'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82270'
references:
  - url: 'https://github.com/Portkey-AI/gateway'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Portkey-AI/gateway/blob/669825cbe89ee51569918b8f78a9db486fd69dd4/src/index.ts
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Portkey-AI/gateway/issues/1718'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/portkey-ai-gateway-server-side-request-forgery-via-v1-proxy
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00482
epssPercentile: 0.38958
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-08-31T18:44:19.539683Z'
ingestedAt: '2026-09-24T15:45:56.694Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.