/ 
HTML-FormFu-2.07
/ HTML::FormFu::Element::DateTime
Security Advisories (1)
CVE-2026-19873 (2026-08-31)

HTML::FormFu versions through 2.08 for Perl allow resource exhaustion via an unbounded repeat count from the query string in Repeatable elements. When a Repeatable element has counter_name set, its process method reads the repeat count from the named query string parameter, checks only that it is a positive integer, and passes it to repeat, which deep-clones the element's child subtree once per iteration. Nothing caps the value, and no attribute lets an application impose a limit. The count is read on every request, before the form decides whether it was submitted, so a plain GET reaches the clone loop with no credentials, no session and no request body. Nesting multiplies: a Repeatable inside a Repeatable takes a counter at each level, so an outer and an inner value of 100 build 10,000 clones. Once the form is submitted, each cloned field's constraints scan the whole element tree in _find_field_value, so cost grows faster than linearly with the count. A single request exhausts memory and CPU. The latest release on CPAN is 2.07, from 2018. Version 2.08 exists only in the git repository.

NAME

HTML::FormFu::Element::DateTime - Date / Time combo field

VERSION

version 2.07

SYNOPSIS

---
elements:
  - type: DateTime
    name: start_datetime
    label: 'Start:'
    auto_inflate: 1

DESCRIPTION

Sub-class of Date element, providing extra hour and minute Select menus.

METHODS

hour

Arguments: \%setting

Set values effecting the hour select menu. Known keys are:

name

Override the auto-generated name of the select menu.

default

Set the default value of the select menu

prefix

Arguments: $value

Arguments: \@values

A string or arrayref of strings to be inserted into the start of the select menu.

Each value is only used as the label for a select item - the value for each of these items is always the empty string ''.

prefix_loc

Arguments: $localization_key

Arguments: \@localization_keys

A localized string or arrayref of localized strings to be inserted into the start of the select menu.

Each value is localized and then only used as the label for a select item - the value for each of these items is always the empty string ''.

Use prefix_loc insted of prefix.

minute

Arguments: \%setting

Set values effecting the minute select menu. Known keys are:

name

Override the auto-generated name of the select menu.

default

Set the default value of the select menu

prefix

Arguments: $value

Arguments: \@values

A string or arrayref of strings to be inserted into the start of the select menu.

Each value is only used as the label for a select item - the value for each of these items is always the empty string ''.

prefix_loc

Arguments: $localization_key

Arguments: \@localization_keys

A localized string or arrayref of localized strings to be inserted into the start of the select menu.

Each value is localized and then only used as the label for a select item - the value for each of these items is always the empty string ''.

Use prefix_loc insted of prefix.

second

Arguments: \%setting

Set values effecting the second select menu. Known keys are:

name

Override the auto-generated name of the select menu.

default

Set the default value of the select menu

prefix

Arguments: $value

Arguments: \@values

A string or arrayref of strings to be inserted into the start of the select menu.

Each value is only used as the label for a select item - the value for each of these items is always the empty string ''.

prefix_loc

Arguments: $localization_key

Arguments: \@localization_keys

A localized string or arrayref of localized strings to be inserted into the start of the select menu.

Each value is localized and then only used as the label for a select item - the value for each of these items is always the empty string ''.

Use prefix_loc insted of prefix.

field_order

Arguments: \@fields

Default Value: ['day', 'month', 'year', 'hour', 'minute']

Specify the order of the date fields in the rendered HTML.

If you want the "second" selector to display, you must set both /field_order and strftime yourself. Eg:

elements:
  type: DateTime
  name: foo
  strftime: '%d-%m-%Y %H:%M:%S'
  field_order: ['day', 'month', 'year', 'hour', 'minute', 'second']

Not all fields are required. No single field can be used more than once.

CAVEATS

See "CAVEATS" in HTML::FormFu::Element::Date

SEE ALSO

Is a sub-class of, and inherits methods from HTML::FormFu::Element::Date HTML::FormFu::Role::Element::Field, HTML::FormFu::Element::Multi, HTML::FormFu::Element::Block, HTML::FormFu::Element

HTML::FormFu

AUTHOR

Carl Franks, cfranks@cpan.org

LICENSE

This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

Carl Franks <cpan@fireartist.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by Carl Franks.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.