by Kastro
Paper/Archive/CVE-2025-66405

CVE-2025-66405

Portkey-AI gateway — Portkey.ai Gateway: Server-Side Request Forgery (SSRF) in Custom Host

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
36
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 30.9.309 × 206.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
gateway< 1.14.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/Portkey-AI/gateway/security/advisories/GHSA-hhh5-2cvx-vmfprefgithub.com/Portkey-AI/gateway/pull/1372refgithub.com/Portkey-AI/gateway/commit/b5a7825ba5f4e6918deb32d9969899ce2229a885