With the vulnerabilities disclosed in Stagefright, we are working towards revised builds for affected users. Until then, we have opted to disable further downloads of the installer.
Users currently on installer releases are advised to disable automatic MMS downloads (this will not stop the issue, but does help address the most impacted attack vector).
To fully protect yourself immediately, we encourage you to flash the community releases of 11.0 and 12.0 (if available) planned for availability at the end of this month. Do note that this upgrade to community releases will require a data wipe and separate installation of Google applications
An update to installer releases will be made, however no date on this can be provided at the moment.
For support, head on over to the CyanogenMod forums: