---
id: CVE-2026-47107
title: >-
  Windmill prior to 1.703.2 contains an incorrect default permissions
  vulnerability in nsjail sandbox configuration files where /etc is bind-mounted
  without read-write restrictions, allowing authenticated users to write
  arbitrary entries t…
summary: >-
  Windmill prior to 1.703.2 contains an incorrect default permissions
  vulnerability in nsjail sandbox configuration files where /etc is bind-mounted
  without read-write restrictions, allowing authenticated users to write
  arbitrary entries t…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-276
published: '2026-05-19'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T21:10:00.173'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-47107'
references:
  - url: >-
      https://github.com/windmill-labs/windmill/commit/f8467f38c8a053117ce62f96684cfb15ef792f08
    label: disclosure@vulncheck.com
  - url: 'https://github.com/windmill-labs/windmill/pull/9194'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/windmill-labs/windmill/releases/tag/v1.703.2'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/windmill-incorrect-default-permissions-in-nsjail-configuration
    label: disclosure@vulncheck.com
  - url: 'https://github.com/windmill-labs/windmill/pull/9194'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00317
epssPercentile: 0.2252
ingestedAt: '2026-10-06T21:20:28.946Z'
---

## Overview

Windmill prior to 1.703.2 contains an incorrect default permissions vulnerability in nsjail sandbox configuration files where /etc is bind-mounted without read-write restrictions, allowing authenticated users to write arbitrary entries to /etc/hosts, /etc/resolv.conf, and /etc/ssl/certs/ca-certificates.crt from within script execution sandboxes. Attackers can exploit persistent poisoned entries across all subsequent script executions on the same worker pod to redirect hostnames, intercept DNS queries, perform transparent HTTPS man-in-the-middle attacks, and intercept WM_TOKEN JWTs to gain workspace-admin access to other users' workspaces.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.