Express-handlebars Path Traversal Vulnerability CVE-2021-32820 Scanner

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Express-handlebars Path Traversal Vulnerability CVE-2021-32820 Scanner Detail

Express-handlebars allows path traversal vulnerability.

Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.

Some Advice for Common Problems

  • You need to apply related fixes.
  • Sanitize all parameters received as input from the user.

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