source: https://www.securityfocus.com/bid/17750/info
TextFileBB is prone to multiple script-injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input before including it in dynamically generated content.
Attacker-supplied HTML and script code would be able to access properties of the site, potentially allowing the attacker to steal cookie-based authentication credentials. Other attacks are also possible.
These issues are reported to affect version 1.0.16; other versions may also be vulnerable.
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[code][.size=7" OnMouseOver="alert(/xss/)]Clicky Here [/size][/code]
[code][.url=http://" OnMouseOver="alert(/xss/)]hmm[/url][/code]