Description
JStachio is a type-safe Java Mustache templating engine. Prior to version 1.0.1, JStachio fails to escape single quotes `'` in HTML, allowing an attacker to inject malicious code. This vulnerability can be exploited by an attacker to execute arbitrary JavaScript code in the context of other users visiting pages that use this template engine. This can lead to various consequences, including session hijacking, defacement of web pages, theft of sensitive information, or even the propagation of malware. Version 1.0.1 contains a patch for this issue. To mitigate this vulnerability, the template engine should properly escape special characters, including single quotes. Common practice is to escape `'` as `'`. As a workaround, users can avoid this issue by using only double quotes `"` for HTML attributes.
Remediation
References
https://github.com/jstachio/jstachio/commit/7b2f78377d1284df14c580be762a25af5f8dcd66
https://github.com/jstachio/jstachio/issues/157
https://github.com/jstachio/jstachio/pull/158
https://github.com/jstachio/jstachio/releases/tag/v1.0.1
https://github.com/jstachio/jstachio/security/advisories/GHSA-gwxv-jv83-6qjr
Related Vulnerabilities
CVE-2023-33187 Vulnerability in npm package highlight.run
CVE-2020-7596 Vulnerability in npm package codecov
CVE-2020-5207 Vulnerability in maven package io.ktor:ktor-server-cio
CVE-2023-28681 Vulnerability in maven package org.jenkins-ci.plugins:vs-code-metrics
CVE-2020-7743 Vulnerability in maven package org.webjars.npm:mathjs