title: Improper handling of HTML-like comments in script contexts in html/template
description: The html/template package does not properly handle HTML-like "" comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack.
problem types: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
vendor: Go standard library
product: html/template
collectionURL: https://pkg.go.dev
packageName: html/template
versions:
version: 0, lessThan: 1.20.8, status: affected, versionType: semver
version: 1.21.0-0, lessThan: 1.21.1, status: affected, versionType: semver
programRoutines:
name: isComment
name: escaper.escapeText
name: tJS
name: tLineCmt
name: Template.Execute
name: Template.ExecuteTemplate
defaultStatus: unaffected
}