CVE-2026-29514
NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the RenderTemplateMixin.get_environment_params() method that allows authen…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| NetBox Versions 4.3.5 | through 4.5.4 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://chocapikk.com/posts/2026/netbox-export-template-rce/
- https://github.com/netbox-community/netbox/commit/d124c5fe86e12aad61285133c0caf16adcda8f2e
- https://github.com/netbox-community/netbox/issues/22079
- https://github.com/netbox-community/netbox/pull/22078
- https://github.com/netbox-community/netbox/pull/22170
- https://github.com/netbox-community/netbox/releases/tag/v4.6.1
- https://www.vulncheck.com/advisories/netbox-rce-via-rendertemplatemixin