SSRF in Portkey-Ai Gateway
CVE-2026-82270
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/Portkey-AI/gateway/issues/1718 (issue-tracking)
- github.com/Portkey-AI/gateway (product)
- github.com/Portkey-AI/gateway/blob/669825cbe89ee51569918b8f78a9db486fd69dd4/src… (technical-description)
- www.vulncheck.com/advisories/portkey-ai-gateway-server-side-request-forgery-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82270?
- CVE-2026-82270 is a high-severity vulnerability in Portkey-Ai Gateway, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-08-28.
- How severe is CVE-2026-82270?
- High severity. CVSS v3 base score is 7.5 out of 10.