---
id: "CVE-2026-112051"
kind: "vulnerability"
aliases: ["CVE-2026-112051"]
title: "Xinference on Windows: path traversal lets unauthenticated users overwrite JSON files"
severity: "high"
cvss: 8.3
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-tooling", "llm-serving", "self-hosted", "windows", "xinference"]
not_affected_if: ["api-not-exposed", "linux-only"]
published_at: "2026-10-18T13:16:37+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T03:02:28+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112051", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# Xinference on Windows: path traversal lets unauthenticated users overwrite JSON files

Xinference through 4.0.1 fails to block backslash sequences in model_name on Windows. An unauthenticated attacker can register a custom model named like ..\..\evil to write and delete arbitrary .json files the Xinference process can reach.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `xinference --version` and compare against the fixed release listed in the advisory (unknown in sources)
- Check whether the host runs Xinference on Windows and whether the API port is reachable from untrusted networks
- Look for unexpected .json files written under the Xinference data or model directories

## Fix

- Upgrade Xinference past `4.0.1` once a fixed release is published (fixed version unknown in sources)
- Until then, block access to the Xinference API port from untrusted networks

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112051

## From the sources

Xinference through 4.0.1 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to write and delete arbitrary .json files via backslash sequences in model_name. Attackers can register a persisted custom model through POST /v1/model_registrations/{model_type} with names like ..\..\evil to overwrite configuration or data files writable by the Xinference process.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_