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Template-Toolkit-3.010
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Security Advisories (1)
CVE-2026-5090 (2026-05-19)

Template::Plugin::HTML versions through 3.102 for Perl allows HTML and JavaScript to be injected. The html_filter function did not escape single quotes. HTML attributes inside of single quotes could be have code injected. For example, the variable "var" in <a id='ref' title='[% var | html %]'> would not be properly escaped. An attacker could insert some limited HTML and JavaScript, for example, var = " ' onclick='while (true) { alert(1) }'" Note that arbitrary HTML and JavaScript would be difficult to inject, because angle brackets, ampersands and double-quotes would still be escaped.

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Template::Tutorial - Template Toolkit Tutorials

Template Toolkit Tutorials

Template::Tutorial::Web

The Template::Tutorial::Web tutorial shows how you can use the Template Toolkit to generate static and dynamic web content.

Template::Tutorial::Datafile

The Template::Tutorial::Datafile tutorial shows how you can use the Template Toolkit to generate other data formats like XML.