CVE-2026-82270CWE-918ssrf

CVE-2026-82270

High · published August 29, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
40.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
8.7 · 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
EPSS
0.00482 · 40.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-08-29T00:20Z
References (4)
https://github.com/Portkey-AI/gateway · [email protected]https://github.com/Portkey-AI/gateway/blob/669825cbe89ee51569918b8f78a9db486fd69dd4/src/index.ts · [email protected]https://github.com/Portkey-AI/gateway/issues/1718 · [email protected]https://www.vulncheck.com/advisories/portkey-ai-gateway-server-side-request-forgery-via-v1-proxy · [email protected]
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 28 AUG 16:18Z
    Portkey AI Gateway Server-Side Request Forgery via /v1/proxy/*
    cvelistv5