WordPress 1.5.1.3 was released this morn­ing. This release con­tains a secur­ity fix that is well worth hav­ing. Whilst the par­tic­u­lar vul­ner­ab­il­ity hasn’t been offi­cially announced, it’s not too hard to fig­ure it out.

I’ve just upgraded the dozen or so blogs I man­age and it was quite pain­less. There are some other fixes along with the secur­ity fix so don’t hes­it­ate to get it.