wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php:774Checks that the "plugin" parameter is a valid path.
$filestringbool public function validate_plugin_param( $file ) { if ( ! is_string( $file ) || ! preg_match( '/' . self::PATTERN . '/u', $file ) ) { return false; } $validated = validate_file( plugin_basename( $file ) ); return 0 === $validated; }Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.