CVE-2021-32822: Hbs Project Hbs

Medium severity, CVSS 5.3. EPSS: 1.2% chance of exploitation in the next 30 days.

The npm hbs package is an Express view engine wrapper for Handlebars. Depending on usage, users of hbs may be vulnerable to a file disclosure vulnerability. There is currently no patch for this vulnerability. hbs mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options a file disclosure vulnerability may be triggered in downstream applications. For an example PoC see the referenced GHSL-2021-020.

Affected products

• Hbs Project Hbs: affected versions not specified

Published 2021-08-16. Last modified 2026-06-17.