express-hbs is an Express handlebars template engine. express-hbs mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .hbs appended to them. For complete details refer to the referenced GHSL-2021-019 report. Notes in documentation have been added to help users of express-hbs avoid this potential information exposure vulnerability.
Published 2021-05-14 19:15:08
Updated 2022-07-02 18:24:31
Source GitHub, Inc.
View at NVD,   CVE.org
Vulnerability category: Information leak

Products affected by CVE-2021-32817

Exploit prediction scoring system (EPSS) score for CVE-2021-32817

0.29%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 69 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-32817

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
NIST
6.8
MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
2.2
4.0
NIST
5.4
MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
2.2
2.7
GitHub, Inc.

CWE ids for CVE-2021-32817

References for CVE-2021-32817

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