Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Express Handlebars Project | Express Handlebars | <= 5.3.2 |
Related Weaknesses (CWE)
References
- https://github.com/TryGhost/express-hbs#%EF%B8%8F-this-creates-a-potential-securRelease NotesThird Party Advisory
- https://github.com/TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7PatchThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-019-express-hbs/ExploitPatchThird Party Advisory
- https://www.npmjs.com/package/express-hbsProduct
- https://github.com/TryGhost/express-hbs#%EF%B8%8F-this-creates-a-potential-securRelease NotesThird Party Advisory
- https://github.com/TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7PatchThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-019-express-hbs/ExploitPatchThird Party Advisory
- https://www.npmjs.com/package/express-hbsProduct
FAQ
What is CVE-2021-32817?
CVE-2021-32817 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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...
How severe is CVE-2021-32817?
CVE-2021-32817 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32817?
Check the references section above for vendor advisories and patch information. Affected products include: Express Handlebars Project Express Handlebars.