GHSA-7f5c-rpf4-86p8

hbs: Insertion of Sensitive Information into Externally-Accessible File or Directory and Exposure of Sensitive Information to an Unauthorized Actor

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-32822

Packages

Ecosystem	Package	Affected	Fixed in
npm	hbs	<= 4.4.0	no fix listed

Details

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

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.

References

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

https://nvd.nist.gov/vuln/detail/CVE-2021-32822 advisory
https://github.com/pillarjs/hbs package
https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs advisory