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Medium ALAS2-2026-3345 1 CVE

Moderate: perl-Template-Toolkit security update (Amazon Linux 2)

Published Jun 8, 2026 · Updated Jun 8, 2026

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-5090: emplate::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.

Fixed packages 2

ReleasePackageFixed in
Amazon Linux · 2 perl-Template-Toolkit 0:2.24-5.amzn2.0.3
Amazon Linux · 2 perl-Template-Toolkit-debuginfo 0:2.24-5.amzn2.0.3

Vulnerabilities 1

  • Medium 6.1

    Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected

    Template::Plugin::HTML versions before 3.103 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 …

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-5090.html