In this new post to the PHP Security blog today, Stefan Esser gives a good recommendation to developers out there looking to provide the most recent protection for their applications - look to the CVS.

One of the worst things in PHP security is the fact that vulnerabilities in PHP are usually patched in the CVS and then wait for months until they are disclosed to the public. Time enough for everyone to grab the fixes from CVS and develop exploits for the vulnerabilities. Therefore PHP vulnerabilities are usually already known to the bad guys for weeks or months when a new PHP version comes out and the public is notified about the vulnerability.

He also notes that there are sometimes when it happens that issues aren't represented in the materials that go out with each release. One he mentions specifically involves this bug.