CVE-2025-66405

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/1/2025

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

portkey:gateway

Weaknesses (CWE)

CWE-918

References

https://github.com/Portkey-AI/gateway/commit/b5a7825ba5f4e6918deb32d9969899ce2229a885(security-advisories@github.com)

https://github.com/Portkey-AI/gateway/pull/1372(security-advisories@github.com)

https://github.com/Portkey-AI/gateway/security/advisories/GHSA-hhh5-2cvx-vmfp(security-advisories@github.com)

IOC Correlations

No correlations recorded

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