CPANSA-HTML-FormHandler-2026-85630: HTML-FormHandler vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2026-09-08T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2026-09-08T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 6.1 Severity Medium
Original language Language en
Also referred to

Vulnerability Description

HTML::FormHandler versions before 0.410002 for Perl render field attributes into HTML without escaping using the process_attrs method.

Any application with fields or field labels where some attributes are built from data rather than literals allows attacker-influenced text in an attribute value that can override the field attributes or embed JavaScript in rendered pages.

For example, the RadioGroup widget uses the process_attrs method via the render_option and wrap_radio methods.

Vulnerabilities

CVE-2026-85630

Vulnerability Description

HTML::FormHandler versions before 0.410002 for Perl render field attributes into HTML without escaping using the process_attrs method.

Any application with fields or field labels where some attributes are built from data rather than literals allows attacker-influenced text in an attribute value that can override the field attributes or embed JavaScript in rendered pages.

For example, the RadioGroup widget uses the process_attrs method via the render_option and wrap_radio methods.

Weakness CWE-79 : Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Known affected
Product Score
HTML-FormHandler less than 0.410002
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 6.1 Medium
Fixed

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Tue Sep 8 00:00:00 2026 First release

Sharing rules

TLP:WHITE
For the TLP version see: https://www.first.org/tlp/