CVE-2026-110719
Portkey AI Gateway 1.14.0 through 1.15.2 SSRF via x-portkey-custom-host Header
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 14, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 14, 2026
Description
Portkey AI Gateway 1.14.0 through 1.15.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to reach loopback and Docker host services because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is unset. Attackers can send /v1 requests with a crafted x-portkey-custom-host header, such as via the ollama provider, to make the gateway call internal services and return their responses.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
gatewayPortkey-AI |
|
References
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/BJypv-aiMgtechnical-descriptionexploit
- https://github.com/Portkey-AI/gateway/blob/ca7712947ec8c0887803990b746740d36011c697/src/middlewares/requestValidator/index.ts#L289technical-description
- https://github.com/Portkey-AI/gatewayproduct
- VulnCheck Advisory: Portkey AI Gateway 1.14.0 through 1.15.2 SSRF via x-portkey-custom-host Headerthird-party-advisory
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