Vulnerability Details CVE-2026-106459
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 10.6%
CVSS Severity
CVSS v3 Score 8.5