CVE-2021-32822 — MEDIUM (4.0)

Vulnerability Description

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.

CVSS Score

4.0

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Hbs Project	Hbs	-

Related Weaknesses (CWE)

CWE-94 CWE-538

References

https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs/ExploitThird Party Advisory
https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs/ExploitThird Party Advisory

FAQ

What is CVE-2021-32822?

CVE-2021-32822 is a vulnerability with a CVSS score of 4.0 (MEDIUM). 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 vulner...

How severe is CVE-2021-32822?

CVE-2021-32822 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-32822?

Check the references section above for vendor advisories and patch information. Affected products include: Hbs Project Hbs.