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CVE-2026-106501

Backstage: Sensitive information exposure in Scaffolder PUBLISHED

Description (CNA)

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 sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Affected (CNA)

Vendor / productVersions
backstage / backstageaffected < 1.49.6; affected >= 1.50.0-next.0, < 1.50.5; affected >= 1.51.0-next.0, < 1.54.6
@backstage / plugin-scaffolder-backendaffected < 3.3.1; affected >= 3.4.0, < 3.4.1; affected >= 4.0.0, < 4.0.3; affected >= 4.0.4, < 4.1.0

CWE

CWE-200, CWE-201

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.