CVE-2026-106460
MediumCVSS 6.8Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
In @backstage/plugin-auth-node from 0.3.0 to 0.6.15 and 0.7.5, explicit negative email verification was not consistently honored during shared OAuth profile normalization. In affected configurations, a user may assume another catalog identity and obtain its associated access and permissions. Fixed in versions 0.6.15 and 0.7.5.
Risk Assessment
Risk of identity takeover in the catalog and unauthorized access to resources and permissions, potentially leading to data security breaches.
Recommendation
Upgrade @backstage/plugin-auth-node to version 0.6.15 or 0.7.5 (depending on the line) and ensure email verification is properly configured.
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Original NVD description (English source)
Backstage is an open framework for building developer portals. From 0.3.0 until 0.6.15 and 0.7.5, the @backstage/plugin-auth-node package did not consistently honor explicit negative email verification during shared OAuth profile normalization. The affected paths include a selected profile email marked verified: false, a matching raw provider email marked email_verified: false, and an email obtained only from an ID token marked email_verified: false. Exploitation requires an admitted identity-provider user who can supply or change an unverified email and a deployment that uses the selected profile email to resolve catalog identities. The verification metadata must apply to the selected email; an absent email_verified claim alone is not affected. In an affected configuration, the user may assume another catalog identity and obtain its associated access and permissions. This issue is fixed in versions 0.6.15 and 0.7.5.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS