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CVE-2021-32817

23
FAUCET Score

CVE-2021-32817 is a medium-severity vulnerability affecting the express-hbs Express handlebars template engine. It allows for potential file disclosure due to the mixing of template data with engine configuration options, specifically through the 'layout' parameter in the Express render API. This vulnerability has a CVSS score of 6.8, indicating a network-based attack with high complexity, no user interaction required, and a high impact on confidentiality. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.3.2CPE matchmatch criteria
cpe:2.3:a:express_handlebars_project:express_handlebars:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.27%
Probability of exploitation in next 30 days
EPSS Percentile
66.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0127 is in the 35th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-rwxp-hwwf-653vmedium

Insecure template handling in express-hbs

May 17, 2021

References

github.com / TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7af1500e
PatchThird Party Advisory
github.com / TryGhost/express-hbs
Release NotesThird Party Advisory
securitylab.github.com / advisories/GHSL-2021-019-express-hbs
ExploitPatchThird Party Advisory
npmjs.com / package/express-hbs
Product