Apple has announced that it plans to patch an iOS security hole discovered earlier this week in a future update. Reuters reports that the hole is related to opening an ‘infected’ PDF file from within the Safari browser, which could give hackers access to confidential data; the flaw gained attention earlier this week when a site released a tool that allowed users to jailbreak their devices without needing a separate computer. Apple spokesperson Trudy Muller said that Apple is “developing a fix that will be available to customers in an upcoming software update.” It is unknown when the update might be available.