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Blosxom Writeback Plug-in HTML Injection Vulnerability

Blosxom is prone to an HTML injection vulnerability. This issue presents itself when Blosxom is used in combination with the 'writeback' plug-in.

This can allow an attacker to inject HTML and script code when posting comments on a vulnerable site. A successful attack can allow an attacker to steal cookie-based authentication credentials. Other attacks are possible as well.

Blosxom version 2.0 is affected by this issue, however, other versions could be vulnerable as well.