WordPress patched a second critical vulnerability in its Web publishing platform on Monday, less than a week after fixing a similar problem.
Administrators are advised to upgrade to WordPress version 4.2.1. Some WordPress sites that are compatible with and use a plugin called Background Update Tester will update automatically.
WordPress is one of the most-used Web publishing platforms. By the company’s own estimation, it runs 23% of the sites on the Internet, including major publishers such as Time and CNN.
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