CVE-2019-6112 (PHP, published 2020-08-14T14:15Z)
Description: value: A Cross-site scripting (XSS) vulnerability in /inc/class-search.php in the Sell Media plugin v2.4.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the keyword parameter (aka $search_term or the Search field).
Severity: MEDIUM (CVSS v3 base score: 6.1)
Weakness: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Repository: https://github.com/graphpaperpress/Sell-Media
Files changed:
inc/class-layouts.php
inc/class-search.php
inc/helpers.php
inc/scripts.php
js/macy.min.js
Commit message: Fixed masonry layouts, sanitized search input, and misc PHP notices


Vulnerable code:
			$new_content .= sell_media_get_media();
			error_log( 'img width ' . $image_width );
			error_log( 'img height ' . $image_height );
		$html  = '<div id="sell-media-' . $original_id . '" class="' . $class . '" style="width:' . $width . 'px; flex-grow:' . $width . '; " >';

		$search_term = get_query_var( 'search_query' );
				$html .= $this->search_help();
}
			setTimeout(function(){ 

					macyInstances.push(Macy(macyOptions));
				window.dispatchEvent(new Event("resize"));
			}, 100)'
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Fixed code:

			if ( ! sell_media_is_search() ) {
				$new_content .= sell_media_get_media();
			}
			$html  = '<div id="sell-media-' . $original_id . '" class="' . $class . '" style="width:' . $width . 'px; flex-grow:' . $width . '; " >';
		} else {
		
			$html  = '<div id="sell-media-' . $original_id . '" class="' . $class . '">';
		
		$search_term = htmlspecialchars(trim(stripslashes(strip_tags(get_query_var( 'search_query' )))));
				//$html .= $this->search_help();
}
			jQuery(function() {
				var macyGrid = Macy; 
					macyInstances.push(macyGrid(macyOptions));
			});'
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