This release fixes a possible SSL man-in-the-middle vulnerability inside the code which performs the SSL certificate validation. For more information about the vulnerability, please see the “Security” page -

Everyone using an older version is strongly encouraged to upgrade to this release.


Libcloud 0.11.1 can be downloaded from or installed using pip:

pip install apache-libcloud

It is possible that the file hasn’t been synced to all the mirrors yet. If this is the case, please use the main Apache mirror -


If you have installed Libcloud using pip you can also use it to upgrade it:

pip install --upgrade apache-libcloud

Upgrade notes

A page which describes backward incompatible or semi-incompatible changes and how to preserve the old behavior when this is possible can be found at


API documentation can be found at

Bugs / Issues

If you find any bug or issue, please report it on our issue tracker Don’t forget to attach an example and / or test which reproduces your problem.


Thanks to the researchers from the University of Texas at Austin (Martin Georgiev, Suman Jana and Vitaly Shmatikov) who discovered this vulnerability.

Source: release announcement.