Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-106504

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder task logs. An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. This issue is fixed in version 4.1.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 15.4%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-106504


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