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CVE PROGRAM SOURCE RECORD8.5 High

CVE-2026-106500

Backstage: Improper task state validation in Scaffolder backend

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific timing and deployment conditions, affect files accessible to the Backstage backend. If backend application files are writable, the confidentiality, integrity, and availability of the backend may be compromised. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

backstage backstage

  • < 1.49.6affected
  • >= 1.50.0-next.0, < 1.50.5affected
  • >= 1.51.0-next.0, < 1.54.6affected

@backstage plugin-scaffolder-backend

  • < 3.3.1affected
  • >= 3.4.0, < 3.4.1affected
  • >= 4.0.0, < 4.0.3affected
  • >= 4.0.4, < 4.1.0affected

References