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GHSA-2cmg-v53w-8xfp

Backstage: Improper repository path validation in a Scaffolder backend module

Source: GitHub Advisory Database (reviewed) High CVE-2026-106560

Packages

EcosystemPackageAffectedFixed in
npm @backstage/plugin-scaffolder-backend-module-confluence-to-markdown < 0.3.25 0.3.25

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact An authenticated user who can execute an affected template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process. ### Patches Patched in `@backstage/plugin-scaffolder-backend-module-confluence-to-markdown` version `0.3.25` ### Workarounds - Restrict execution of templates using the affected action to trusted users. - Remove or disable the affected action until the patched package is deployed.

References

External links from the advisory. They lead to third-party sites.