TODDR Template::Plugin::HTML up to 3.102 on Perl HTML Attribute var HTML injection

Summaryinfo

A vulnerability was found in TODDR Template::Plugin::HTML up to 3.102 on Perl. It has been classified as problematic. This impacts an unknown function of the component HTML Attribute Handler. This manipulation of the argument var causes HTML injection. This vulnerability is tracked as CVE-2026-5090. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in TODDR Template::Plugin::HTML up to 3.102 on Perl and classified as problematic. Affected by this vulnerability is an unknown code block of the component HTML Attribute Handler. The manipulation of the argument var with an unknown input leads to a html injection vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-5090 since 03/28/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-30995). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• TODDR

Name

• Template::Plugin::HTML

Version

• 3.102

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion