CVE-2026-19872

*** Pendiente de traducción *** HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.<br /> <br /> The wrappers and renderers that emit a form&amp;#39;s errors interpolate the error string straight into HTML with no escaping. Two of the library&amp;#39;s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.<br /> <br /> A field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application&amp;#39;s own escaping template layer rather than the library&amp;#39;s rendering roles are not affected.<br /> <br /> A request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim&amp;#39;s origin. Re-rendering a rejected value later gives the stored variant.