CVE-2026-106560: Improper Repository Path Validation in @backstage/plugin-scaffolder-backend-module-confluence-to-markdown
Summary
CVE-2026-106560: Backstage: Improper repository path validation in a Scaffolder backend module. Affects @backstage/plugin-scaffolder-backend-module-confluence-to-markdown versions < 0.3.25. Fixed in 0.3.25. How to fix ↓
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Background
The @backstage/plugin-scaffolder-backend-module-confluence-to-markdown is a plugin used within the Backstage framework to facilitate the conversion of Confluence content into Markdown format. This module is designed to enhance developer productivity by automating content management tasks. However, it has been identified that the module is vulnerable to improper repository path validation, which can lead to unauthorized file writing.
Vulnerability Detail
The vulnerability arises from the lack of proper validation of repository paths in the Scaffolder backend module. An authenticated user who can execute an affected template and control its repository file location may exploit this flaw to write generated content outside the intended task workspace. This could potentially lead to unauthorized access or modification of files within locations that are writable by the Backstage backend process, posing a significant security risk.
How To Fix
Latest published version: 0.3.27 as of 23 Oct 2026
npm install @backstage/plugin-scaffolder-backend-module-confluence-to-markdown@0.3.27Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
0.3.25
This is the first release that contains the fix.
npm install @backstage/plugin-scaffolder-backend-module-confluence-to-markdown@0.3.25Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, restrict the execution of templates using the affected action to trusted users only. Alternatively, you can remove or disable the affected action until the patched package is deployed.
Conclusion
In summary, CVE-2026-106560 represents a significant security vulnerability in the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package due to improper repository path validation. It is crucial for users to update to the patched version or implement workarounds to mitigate potential risks.
See every vulnerability recorded for @backstage/plugin-scaffolder-backend-module-confluence-to-markdown →
FAQ
CVE-2026-106560 is a vulnerability in the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown that allows improper repository path validation, potentially leading to unauthorized file access.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which analyzes your package-lock.json for vulnerabilities.
If exploited, this vulnerability could allow unauthorized users to write files to sensitive locations, leading to data breaches or system compromise.
Yes, the vulnerability has been patched in version 0.3.25 of the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package.
If immediate updates are not possible, restrict access to the affected templates and consider disabling the affected action until the patch can be applied.
References
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