Server-Side Request Forgery in Portkey AI Gateway by Portkey AI
CVE-2026-82270

8.7HIGH

Key Information:

Vendor

Portkey-ai

Status
Gateway
Vendor
CVE Published:
28 August 2026

What is CVE-2026-82270?

Portkey AI Gateway versions prior to 1.15.2 are susceptible to a server-side request forgery vulnerability in the /v1/proxy/* endpoint. The absence of requestValidator middleware allows attackers to manipulate the x-portkey-custom-host header, potentially directing requests towards internal addresses. This exploit can lead to unauthorized access and the exfiltration of sensitive API keys by forwarding requests with Authorization headers to internal services.

Affected Version(s)

gateway 1.14.0 <= 1.15.2

References

https://github.com/Portkey-AI/gateway/issues/1718
issue-tracking
https://github.com/Portkey-AI/gateway
product
https://github.com/Portkey-AI/gateway/blob/669825cbe89ee5...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.