Amazon Linux 2 : perl-Template-Toolkit, --advisory ALAS2-2026-3345 (ALAS-2026-3345)

medium Nessus Plugin ID 319839

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of perl-Template-Toolkit installed on the remote host is prior to 2.24-5. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3345 advisory.

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. (CVE-2026-5090)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update perl-Template-Toolkit' or or 'yum update --advisory ALAS2-2026-3345' to update your system.

Plugin Details

Severity: Medium

ID: 319839

File Name: al2_ALAS-2026-3345.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2026

Updated: 6/8/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-5090

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perl-template-toolkit-debuginfo, p-cpe:/a:amazon:linux:perl-template-toolkit, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2026

Vulnerability Publication Date: 5/19/2026

Reference Information

CVE: CVE-2026-5090

Detections

Analytics