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CVE-2026-47107— Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration

Quick assessment

Affected
windmill-labs windmill
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Windmill是Windmill Labs, Inc开源的一个低代码开发平台。 Windmill 1.703.2之前版本存在安全漏洞，该漏洞源于nsjail沙箱配置文件中/etc以无读写限制方式绑定挂载，可能导致认证用户从脚本执行沙箱内写入/etc/hosts、/etc/resolv.conf和/etc/ssl/certs/ca-certificates.crt的任意条目，攻击者可利用持久化投毒条目重定向主机名、拦截DNS查询、执行透明HTTPS中间人攻击，并拦截WM_TOKEN JWT以获取跨租户受害

CVSS 8.1 · High EPSS 0.32% · P23

Affected Version Matrix 2

VendorProduct Version RangeStatus
windmill-labs windmill < 1.703.2 affected
f8467f38c8a053117ce62f96684cfb15ef792f08 unaffected
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I. Basic Information for CVE-2026-47107

Vulnerability Information
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Vulnerability Title
Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Windmill 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Windmill是Windmill Labs, Inc开源的一个低代码开发平台。 Windmill 1.703.2之前版本存在安全漏洞，该漏洞源于nsjail沙箱配置文件中/etc以无读写限制方式绑定挂载，可能导致认证用户从脚本执行沙箱内写入/etc/hosts、/etc/resolv.conf和/etc/ssl/certs/ca-certificates.crt的任意条目，攻击者可利用持久化投毒条目重定向主机名、拦截DNS查询、执行透明HTTPS中间人攻击，并拦截WM_TOKEN JWT以获取跨租户受害
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
windmill-labs windmill 0 ~ 1.703.2 -

II. Public POCs for CVE-2026-47107

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III. Intelligence Information for CVE-2026-47107

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Patches & Fixes for CVE-2026-47107 (2)

Vendor Advisories for CVE-2026-47107 (1)

Vendor Pages for CVE-2026-47107 (1)

IV. Related Vulnerabilities

Same product: windmill
Same vendor: windmill-labs
Same weakness: CWE-276

V. Comments for CVE-2026-47107

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