CVE-2026-54918 Server-side request forgery in devicetype-library
Attackers can manipulate CI test configurations to trigger SSRF and bypass validation checks in the NetBox Device Type Library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54918?
CVE-2026-54918 is a medium-severity server-side request forgery vulnerability in netbox-community devicetype-library, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. In the affected repository revisions, NETBOX_DT_LIBRARY_URL in tests/test_configuration.py is a free-form tracked constant that an unauthenticated pull-request author can change before the validation test harness runs. During pytest collection, tests/definitions_test.py passes the value to Repo.clone_from and create_remote("upstream").fetch(), causing blind Git smart-HTTP requests to an attacker-selected host or loading attacker-controlled tests/known-*.json validation caches. The blind request cannot set arbitrary metadata-service headers or return response bodies, and this path does not execute remote Git hooks, but substituted known data can bypass slug, module, and rack uniqueness validation. This vulnerability is fixed in commit 8980c690097e92f5028c7e6df402b327d827ecd5.
Which versions are affected by CVE-2026-54918?
How do I fix CVE-2026-54918?
No fix has been published for CVE-2026-54918 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-54918 being exploited?
There is no known exploitation of CVE-2026-54918 in the wild and no public exploit code.
Sources
Also known as GHSA-8cfp-3c4q-xr6x.