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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | HTML-FormHandler | < 0.410002 | 0.410002 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libhtml-formhandler-perl | 0.410002-1 | — |
| Debian 13 | libhtml-formhandler-perl | No fix yet | — |
| Debian 12 | libhtml-formhandler-perl | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libhtml-formhandler-perl | No fix yet | — |
| Ubuntu 26.04 LTS | libhtml-formhandler-perl | No fix yet | — |
| Ubuntu 24.04 LTS | libhtml-formhandler-perl | No fix yet | — |
| Ubuntu 22.04 LTS | libhtml-formhandler-perl | No fix yet | — |
| Ubuntu 20.04 LTS | libhtml-formhandler-perl | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libhtml-formhandler-perl | No fix yet | — |
| Ubuntu 16.04 LTS | libhtml-formhandler-perl | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | perl-HTML-FormHandler | 0.410.2-1.1 | openSUSE-SU-2026:11745-1 |
Advisories 1
- openSUSE-SU-2026:11745-1 perl-HTML-FormHandler-0.410.2-1.1 on GA media SUSE / openSUSE Security Updates · Sep 11, 2026