Server-side Request Forgery (SSRF) Affecting @backstage/plugin-scaffolder-backend-module-sentry package, versions >=0.3.0 <0.3.8
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-BACKSTAGEPLUGINSCAFFOLDERBACKENDMODULESENTRY-20825503
- published11 Oct 2026
- disclosed7 Oct 2026
- creditUnknown
Introduced: 7 Oct 2026
NewCVE-2026-106459 (opens in a new tab)How to fix?
Upgrade @backstage/plugin-scaffolder-backend-module-sentry to version 0.3.8 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the apiBaseUrl input parameter in the createSentryCreateProjectAction and fetchDSN scaffolder actions, which previously accepted an arbitrary caller-supplied URL without validating it against the operator-configured scaffolder.sentry.apiBaseUrl. An authenticated user can supply a malicious base URL to redirect Sentry API requests to an internal or attacker-controlled host, causing the Backstage backend to issue HTTP requests to arbitrary destinations and potentially exposing sensitive data from internal services.