CVE-2021-32818: Insecure template handling in haml-coffee

haml-coffee Updated 02 Oct 2025

Summary

17/05/2021

Disclosed on

CVE-2021-32818

CVE

No i

Fix available

High

Severity

7.7

CVSS Score

CVE-2021-32818: Insecure template handling in haml-coffee. Affects haml-coffee versions < 1.14.1. No fix is published. How to fix ↓

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Background

haml-coffee is a JavaScript templating solution that mixes pure template data with engine configuration options through the Express render API. It supports overriding HTML helper functions through its configuration options. The latest version of haml-coffee is 1.14.1.

Vulnerability Detail

The vulnerability in haml-coffee allows for remote code execution (RCE) if a vulnerable application passes user-controlled request objects to the template engine. Additionally, control over the escapeHtml parameter through template configuration pollution can lead to reflected Cross-Site Scripting (XSS) attacks against downstream applications. The issue has a severity rating of HIGH (CVSS score: 7.7).

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No workaround is available for this vulnerability.

Conclusion

The vulnerability in haml-coffee exposes applications to potential remote code execution (RCE) and reflected Cross-Site Scripting (XSS) attacks. It is important to stay updated on security advisories and apply the latest version of haml-coffee once a fix is available. For further support on vulnerability remediation, contact DevNack.com.

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