CPANSA-HTML-FormHandler-2026-85485: 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 some error messages into HTML without escaping.
The Table form layout and the Bootstrap 2 and 3 wrappers splice each error string straight into the surrounding markup. Version 0.410000, the fix for CVE-2026-19872, escaped the equivalent values in the other layouts and wrappers, and 0.410002 extended that to these three.
Error messages that contain attacker-influenced content such as rejected field values could embed JavaScript in rendered pages.
Vulnerabilities
CVE-2026-85485
Vulnerability DescriptionHTML::FormHandler versions before 0.410002 for Perl render some error messages into HTML without escaping.
The Table form layout and the Bootstrap 2 and 3 wrappers splice each error string straight into the surrounding markup. Version 0.410000, the fix for CVE-2026-19872, escaped the equivalent values in the other layouts and wrappers, and 0.410002 extended that to these three.
Error messages that contain attacker-influenced content such as rejected field values could embed JavaScript in rendered pages.
| 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 |
|
Fixed
- HTML-FormHandler greater than or equal 0.410002
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-HTML-FormHandler-2026-85485 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-html-formhandler-2026-85485.json - https://github.com/gshank/html-formhandler/commit/2ea9e138dbfe231e317c13936abe6583217c807f.patch external
https://github.com/gshank/html-formhandler/commit/2ea9e138dbfe231e317c13936abe6583217c807f.patch - https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410002/changes external
https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410002/changes - CVE-2026-85485 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-85485
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/