CVE-2026-106462: medium-severity vulnerability in backstage
Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallback
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
@backstage · plugin-scaffolder-backend@backstage · plugin-scaffolder-backend-module-azure@backstage · plugin-scaffolder-backend-module-bitbucket-cloud@backstage · plugin-scaffolder-backend-module-bitbucket-server@backstage · plugin-scaffolder-backend-module-github@backstage · plugin-scaffolder-backend-module-gitlabbackstage · backstageRelated CVEs — backstage
In the same product, most dangerous first.
CVE-2026-106501CRITICALBackstage: Sensitive information exposure in ScaffolderEPSS 0.5%CVE-2026-32237MEDIUM@backstage/plugin-scaffolder-backend: Possible exposure of defaultEnvironment secrets using dry-run endpointEPSS 0.4%CVE-2026-106503HIGHBackstage: Scaffolder action input authorization bypassEPSS 0.4%CVE-2026-106500HIGHBackstage: Improper task state validation in Scaffolder backendEPSS 0.3%CVE-2026-106486HIGHBackstage: Improper filesystem validation in Bitbucket pull-request scaffolder actionsEPSS 0.3%CVE-2026-106502MEDIUMBackstage: Sensitive information may be exposed in Scaffolder task failure eventsEPSS 0.3%