CVE-2025-66405 json
Portkey.ai Gateway: Server-Side Request Forgery (SSRF) in Custom Host
published 2025-12-01 11 mo ago modified 2026-10-18 21 d ago also GHSA-hhh5-2cvx-vmfp , EUVD-2025-200120
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm @portkey-ai/gateway 1.14.0
- portkey gateway 1.14.0
- github.com/Portkey-AI/gateway@b5a7825 commit
- github.com/Portkey-AI/gateway#1372 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 11 mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @portkey-ai/gateway | <1.14.0 |
1.14.0 |
Affected products
- Portkey-AI gateway
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/Portkey-AI/gateway/pull/1372
web, issue-tracking
-
github.com
/Portkey-AI/gateway/commit/b5a7825ba5f4e6918deb32d9969899ce2229a885
web, patch
-
github.com
/Portkey-AI/gateway/security/advisories/GHSA-hhh5-2cvx-vmfp
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-66405
advisory
-
github.com
/Portkey-AI/gateway
package
Sources
- CVE List CVE-2025-66405
- GitHub Advisory GHSA-hhh5-2cvx-vmfp
- NVD CVE-2025-66405
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