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CVE-2026-29514— NetBox 4.3.5 - 4.5.4 RCE via RenderTemplateMixin

Quick assessment

Affected
netbox-community netbox
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.

NetBox是NetBox社区的一款基于Django、PostgreSql 用于IP地址管理（IPAM）和数据中心基础结构管理（DCIM）的工具。 NetBox 4.3.5版本至4.5.4版本存在安全漏洞，该漏洞源于RenderTemplateMixin.get_environment_params()方法中存在远程代码执行，允许具有exporttemplate或configtemplate权限的认证用户通过在environment_params字段中指定恶意Python可调用对象执行任意代码，攻击者可以

CVSS 8.8 · High EPSS 1.10% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
netbox-community netbox 4.3.5≤ 4.5.4 affected
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I. Basic Information for CVE-2026-29514

Vulnerability Information
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Vulnerability Title
NetBox 4.3.5 - 4.5.4 RCE via RenderTemplateMixin
Source: CVE Program / CVE List V5
Vulnerability Description
NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the RenderTemplateMixin.get_environment_params() method that allows authenticated users with exporttemplate or configtemplate permissions to execute arbitrary code by specifying malicious Python callables in the environment_params field. Attackers can bypass Jinja2 SandboxedEnvironment protections by setting the finalize parameter to any importable Python callable such as subprocess.getoutput, which is invoked on every rendered expression outside the sandbox's call interception mechanism, achieving remote code execution as the NetBox service user.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
宽松定义的白名单
Source: CVE Program / CVE List V5
Vulnerability Title
NetBox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NetBox是NetBox社区的一款基于Django、PostgreSql 用于IP地址管理（IPAM）和数据中心基础结构管理（DCIM）的工具。 NetBox 4.3.5版本至4.5.4版本存在安全漏洞，该漏洞源于RenderTemplateMixin.get_environment_params()方法中存在远程代码执行，允许具有exporttemplate或configtemplate权限的认证用户通过在environment_params字段中指定恶意Python可调用对象执行任意代码，攻击者可以
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
netbox-community netbox 4.3.5 ~ 4.5.4 -

II. Public POCs for CVE-2026-29514

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III. Intelligence Information for CVE-2026-29514

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Patches & Fixes for CVE-2026-29514 (3)

Vendor Advisories for CVE-2026-29514 (1)

Security Blog Posts for CVE-2026-29514 (1)

News Coverage for CVE-2026-29514 (1)

Vendor Pages for CVE-2026-29514 (1)

IV. Related Vulnerabilities

Same product: netbox
Same vendor: netbox-community
Same weakness: CWE-183

V. Comments for CVE-2026-29514

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