VULNERABILITY INTELLIGENCE

CVE-2025-66405

CVSS score9.8 CRITICAL
EPSS probability0.40%
CISA KEVNot currently listed
Published2025-12-01
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Portkey.ai Gateway is a blazing fast AI Gateway with integrated guardrails. Prior to 1.14.0, the gateway determined the destination baseURL by prioritizing the value in the x-portkey-custom-host request header. The proxy route then appends the client-specified path to perform an external fetch. This can be maliciously used by users for SSRF attacks. This vulnerability is fixed in 1.14.0.

Weakness classification

  • security-advisories@github.com: CWE-918

Primary references