Vulnerability · Published Sep 8, 2026 · Assigned by CPANSec
CVE-2026-85484HTML::FormHandler versions before 0.410002 for Perl render option group labels and radio button labels into HTML without escaping
Medium 6.1
In plain English
A medium-severity cross-site scripting in HTML-FormHandler. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
HTML::FormHandler versions before 0.410002 for Perl render option group labels and radio button labels into HTML without escaping. The Select, RadioGroup, CheckboxGroup and HorizCheckboxGroup widgets render a group label unescaped, Select into a label attribute and the other three into element content. RadioGroup also renders each radio button's own label unescaped. Any application whose option list is built from data rather than literals, using options_from, an options_fieldname method, or the DBIC model, allows attacker-influenced text in a label that can override the options or embed JavaScript in rendered pages.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libhtml-formhandler-perl | no fix listed | DEBIAN-CVE-2026-85484 |
| Debian:13 | libhtml-formhandler-perl | no fix listed | DEBIAN-CVE-2026-85484 |
| Debian:14 | libhtml-formhandler-perl | 0.410002-1 | DEBIAN-CVE-2026-85484 |
| Ubuntu:22.04:LTS | libhtml-formhandler-perl | no fix listed | UBUNTU-CVE-2026-85484 |
| Ubuntu:24.04:LTS | libhtml-formhandler-perl | no fix listed | UBUNTU-CVE-2026-85484 |
| Ubuntu:26.04:LTS | libhtml-formhandler-perl | no fix listed | UBUNTU-CVE-2026-85484 |
| Ubuntu:26.10 | libhtml-formhandler-perl | no fix listed | UBUNTU-CVE-2026-85484 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HTML-FormHandler | 0 – before 0.410002 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N