Bender,
We understand you know how to fix it, and I appreciate your post. We, including you, all need to be careful about mentioning the fix.
Though wanting to help is not a bad thing, helping en masse may empower those who don't know the exploit on where to start looking.
As you can see, I've modified your post to not mention what/where.
If you want to try to contact the DarkRP (and any other gamemode that uses the code) authors and let them know, that would be a better recommendation than just posting the fix out in the open. If you have people who you trust and know to host servers, and would use your shared knowledge to fix thier own servers, you could share with them too.