Looks interesting. But please explain a little more how libcurl is to blame here. The multipart boundary is not a security feature, and any security implementation that depends on the multipart boundary being secret is flawed IMHO.

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** [bugs:#1251] Form boundary string should be truly random**
**Status:** open
**Created:** Mon Jun 24, 2013 11:24 AM UTC by Floris
**Last Updated:** Mon Jun 24, 2013 11:24 AM UTC
**Owner:** nobody
The use of predicatable pseudo-random numbers to generate the multipart/form boundary can lead to security issues in software using libcurl.
See: http://localhost.re/p/solusvm-whmcs-module-316-vulnerability
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