Hello,
This is on Arch Linux. The problem has appeared at least since I upgraded to 1.20.2, possibly since 1.20.1--I don't recall attempting to upload any photos while I was on that version. Before that, I was on 1.19.x.
The message in the subject appears in Apache's error log. The full version is:
PHP Notice: curl_setopt_array(): CURLOPT_SSL_VERIFYHOST set to true which disables common name validation (setting CURLOPT_SSL_VERIFYHOST to 2 enables common name validation) in /home/www/drupal-7.17/mediawiki-1.20.2/includes/HttpFunctions.php on line 749
But it was the appearance of a message that mediawiki had failed setting curl opts on the upload file screen that led me to look at the error log.
Now for the versions:
Product Version MediaWiki 1.20.2 PHP 5.4.9 (apache2handler) MySQL 5.5.28
The site is https://parts-unknown.org/wiki. The same thing is happening with https://disunitedstates.org/wiki. They're both hosted on the same Linode.
Thanks!