Vulnerability · Published Aug 28, 2026 · Assigned by VulnCheck
CVE-2026-82270Portkey AI Gateway Server-Side Request Forgery via /v1/proxy/*
High 7.5
In plain English
A high-severity server-side request forgery in gateway from Portkey-AI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 58.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Portkey-AI | gateway | 1.14.0 – through 1.15.2 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- GitHub Issue #1718 issue-tracking
- https://github.com/Portkey-AI/gateway product
- Vulnerable code: index.ts technical-description
- VulnCheck Advisory: Portkey AI Gateway Server-Side Request Forgery via /v1/proxy/* third-party-advisory