How severe is CVE-2021-32822?

CVE-2021-32822 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-32822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32822?

CVE-2021-32822 affects Hbs Project Hbs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32822?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-32822 published?

CVE-2021-32822 was published on 2021-08-16 and last updated on 2026-06-17.

CVE-2021-32822

CVE-2021-32822 is a medium-severity vulnerability in Hbs Project Hbs with a CVSS 3.x base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
CVSS v2: 5.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Hbs Project Hbs
Published: 2021-08-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-32822?: 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.
How severe is CVE-2021-32822?: CVE-2021-32822 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-32822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32822?: CVE-2021-32822 affects Hbs Project Hbs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32822?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32822 published?: CVE-2021-32822 was published on 2021-08-16 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:hbs_project:hbs:-:*:*:*:*:node.js:*:*

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