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Date: Sun, 05 Jul 2015 03:30:04 +0000
From: Nitin Venkatesh <>
To: "" <>
Subject: [FD] Open redirect vulnerability in StageShow Wordpress plugin

# Title: Open redirect vulnerability in StageShow Wordpress plugin v5.0.8
# Submitter: Nitin Venkatesh
# Product: StageShow Wordpress Plugin
# Product URL:
# Vulnerability Type: URL Redirection to Untrusted Site ('Open Redirect')
# Affected Versions: v5.0.8 and possibly below
# Tested Version: v5.0.8
# Fixed Version: v5.0.9
# Link to source code diff:
# Link to changelog:
# CVE Status: None/Unassigned/Fresh

## Product Information

StageShow adds the facility for an online Box-Office for Small
Theatres/Drama Groups, records sales, validates tickets and provides sales

## Vulnerability Description

Open redirect vulnerability in stageshow_redirect.php file using url

## Vulnerable Source Code

31 $url = urldecode($_GET['url']);
34 Redirect($url, true);
36 function Redirect($url, $permanent = false)
37 {
38    header('Location: ' . $url, true, $permanent ? 301 : 302);
39    die;
40 }

## Proof of Concept

Sample exploit GET request:


## Solution:

Upgrade to v5.0.9

## Disclosure Timeline:

2015-05-19 - Discovered. Contacted developer on forums
2015-05-20 - Report mailed to developer
2015-05-21 - Update v5.0.9 released
2015-07-05 - Publishing disclosure to FD mailing list

## Disclaimer:

This disclosure is purely meant for educational purposes. I will in no way
be responsible as to how the information in this disclosure is used.

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