Today's MoAB issue is another format string vulnerability, this time in Colloquy.
The amazingly prescient Colloquy team has already committed a fix, and a new build is available. The issue was noticed and fixed by the Colloquy team prior to the public release of the advisory due to active use of the vulnerability on the freenode network. The MoAB project disclaims responsibility:
"This is an unfortunate prank, and has no relation with us at all (except the fact of developing the proof of concept and distributing it to some people)."