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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXJ3eHAtaHd3Zi02NTN2

Insecure template handling in express-hbs

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.

Permalink: https://github.com/advisories/GHSA-rwxp-hwwf-653v
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXJ3eHAtaHd3Zi02NTN2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 3 years ago
Updated: about 1 year ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Identifiers: GHSA-rwxp-hwwf-653v, CVE-2021-32817
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-32817
• https://github.com/TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7af1500e
• https://github.com/TryGhost/express-hbs#%EF%B8%8F-this-creates-a-potential-security-vulnerability
• https://securitylab.github.com/advisories/GHSL-2021-019-express-hbs/
• https://www.npmjs.com/package/express-hbs
• https://github.com/advisories/GHSA-rwxp-hwwf-653v

Repository: https://github.com/TryGhost/express-hbs
Blast Radius: 20.2

Affected Packages