Your question is too vague to answer. The differences between 2.1. and 2.6.1 alone make it nearly impossible to answer, in fact; as you see both those versions meet the version you specified in your question.
There are insecure plugins, and unfortunately, there are insecure versions of WP.
You indicate in your sidebar that you are using 2.5 — I would recommend upgrading. Thats your first line of defense against any attacks, SQL injections or otherwise.
Thread Starter
katami
(@katami)
Hi Whooami,
Thanks. I have WP 2.5 installed and in the process of upgrading to 2.6.1. I couldn’t find anything around here regarding sql injections using cast which is probably in itself a good thing.
Thanks
2.5 was reponsible for the plague of SQL injection hackers. 2.6 does not have that vulnerability and 2.6.1 has the fix for the permalink issue in 2.6.