Moose Memory Leak in MetaTable: Non-Cached Composed Classes

Vulnerability Overview Vulnerability Type: Memory Leak Root Cause: The use of non-cached composed classes in causes memory leaks. Trigger Condition: The issue is triggered when rendering a field whose value originates from an object and has no value. Scope of Impact Affected Modules: and related renderers (e.g., , , ). Impact Behavior: - When a field value originates from an object and has no value, fields render as empty. - In , non-cached composed classes cause memory leaks. - Multiple renderers (Simple, Table, TableInline) are affected. Fix Solution Core Fix: Replace the non-cached composed classes in with their cached versions to resolve the memory leak. Code-Level Fixes: - In , when a field value originates from an object and has no value, fields should render as empty (rather than erroring or crashing). - In , , and , consistently use to encode entities and correctly handle and . - In , , and , consistently use and , and correctly handle . POC / Exploit Code (Key Code Blocks) 1. Handling Empty Value Logic in 2. Handling Form Errors in 3. Handling Table Rendering in 4. Handling Wrapper in 5. Handling Table Wrapper in 6. Handling Inline Table Wrapper in ```perl In Widget::Wrapper::TableInline, consistently use HTML::Form::Field and HTML::Form::Role use HTML::Form::Field; use HTML::Form::Role; sub render { my ($self, $field) = @_; my $sresault-all_form_errors = $self->sresault-all_form_errors; my $sresault-valid_form_errors = $self->sresault-valid_form_errors; Render the inline table wrapper my $html = $self->render_table_inline_wrapper($field); Render error messages if ($sresault-all_form_errors) { $html .= '' . encode_entities($sresault-all_form_errors) . ''; } if ($sresault-valid_form_errors) { $html .= '' . encode_entities($sresault-valid_form_errors) . ''; } return $html; }

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Moose Memory Leak in MetaTable: Non-Cached Composed Classes

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