CVE-2026-32237 @backstage/plugin-scaffolder-backend: Possible exposure of defaultEnvironment secrets using dry-run endpoint
Authenticated users can access server-configured environment secrets via the scaffolder dry-run endpoint if default environment secrets are configured.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32237?
CVE-2026-32237 is a medium-severity vulnerability in @backstage plugin-scaffolder-backend, published on 12 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Backstage is an open framework for building developer portals. Prior to 3.1.5, authenticated users with permission to execute scaffolder dry-runs can gain access to server-configured environment secrets through the dry-run API response. Secrets are properly redacted in log output but not in all parts of the response payload. Deployments that have configured scaffolder.defaultEnvironment.secrets are affected. This is patched in @backstage/plugin-scaffolder-backend version 3.1.5.
Weakness: CWE-200
Which versions are affected by CVE-2026-32237?
2 open source packages ship an affected version, including @backstage/plugin-scaffolder-backend. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@backstage/plugin-scaffolder-backend npm | From 3.1.0 | 3.1.5 |
@backstage/plugin-scaffolder-backend npm | From 3.1.0 | 3.1.5 |
Products include Linuxfoundation Backstage\/Plugin-Scaffolder-Backend.
How do I fix CVE-2026-32237?
Upgrade @backstage/plugin-scaffolder-backend to 3.1.5 or later.
Is CVE-2026-32237 being exploited?
There is no known exploitation of CVE-2026-32237 in the wild and no public exploit code.
Other vulnerabilities in @backstage plugin-scaffolder-backend
Sources
Also known as GHSA-8wq8-6859-qx77.