CVE-2009-5031

ModSecurity before 2.5.11 treats request parameter values containing single
quotes as files, which allows remote attackers to bypass filtering rules
and perform other attacks such as cross-site scripting (XSS) attacks via a
single quote in a request parameter in the Content-Disposition field of a
request with a multipart/form-data Content-Type header.

Bugs

• <https://launchpad.net/bugs/1016909&gt;