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OpenAdvisories
High · 8.5 CVE-2026-106459 EUVD-2026-93993GHSA-g734-fhp4-7mfp

Backstage: Improper input validation in Sentry scaffolder actions

Published Oct 6, 2026 · Updated Oct 7, 2026 · Assigned by GitHub_M

Description

Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may cause the backend to contact unintended destinations and disclose Sentry integration credentials. Subsequent impact depends on network reachability and the privileges granted to the configured token. This issue is fixed in version 0.3.8.

Affected products

VendorProductAffectedFixed
backstage backstage >= 1.47.0, < 1.54.8 —
@backstage plugin-scaffolder-backend-module-sentry >= 0.3.0, < 0.3.8 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @backstage/plugin-scaffolder-backend-module-sentry >= 0.3.0, < 0.3.8 0.3.8 GHSA-g734-fhp4-7mfp

References