GitHub Advisoryadvisory · npm

GHSA-fr76-2wp8-fp92 Insecure template handling in Express-handlebars

HIGH Published 2022-02-10 Modified 2023-09-05 Official page ↗
Aliases
CVE-2021-32820
Ecosystem
npm
Packages
express-handlebars
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-200, CWE-94
Reviewed
2021-05-17

Affected packages

• npm express-handlebars: < 5.3.1 → fixed in 5.3.1

Description

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. A fix is discussed in https://github.com/express-handlebars/express-handlebars/pull/163

Related

Alias · CVE (1)

  • CVE-2021-32820 Express-handlebars is a Handlebars view engine for Express. vulnerability

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-94 Improper Control of Generation of Code weakness

References