CVE Vulnerability

CVE-2021-32817

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://www.npmjs.com/package/express-hbs Product
https://securitylab.github.com/advisories/GHSL-2021-019-express-hbs/ Exploit Patch
https://github.com/TryGhost/express-hbs#%EF%B8%8F-this-creates-a-potential-security-vulnerability Release Notes Third Party Advisory
https://github.com/TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7af1500e Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:express_handlebars_project:express_handlebars:*:*:*:*:*:node.js:*:*
Information

Published : 2021-05-14 07:15

Updated : 2022-07-02 06:24

NVD link : CVE-2021-32817

Mitre link : CVE-2021-32817

Products Affected
No products.
CWE
CWE-94