Security Advisory About XSS Vulnerabilities in TaskFreak


Advisory by Netsparker (now Invicti)
Name:  XSS Vulnerabilities in TaskFreak
Software:  TaskFreak 0.6.4 and possibly below.
Vendor Homepage:
Vulnerability Type: Cross-Site Scripting
Severity: Critical
Researcher: Canberk Bolat
Advisory Reference: NS-12-011


TaskFreak! Original is a simple but efficient web based task manager written in PHP.
Originally created in September 2005, many talented developers have since contributed to translate and extend the original version. It is now available in 24 languages.


TaskFreak is affected by XSS vulnerabilities in version 0.6.4;

  • index.php (dir, show, sort, sContext) – XSS
  • index.php (sContext) – Stored XSS

Learn more about Cross-Site Scripting here:


No fix.

Advisory Timeline

023/01/2011 – First contact
30/01/2011 – Sent the vulnerability details
16/08/2012 – Second contact – No reply
19/10/2012 – Advisory released


It has been discovered on testing of Invicti.


  1. MSL Advisory Link: /xss-vulnerabilities-in-taskfreak/
  2. Invicti Advisories: /web-applications-advisories/

About Invicti

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