Tumblr has urged users to download an important update for its iOS apps on Tuesday, after a security vulnerability put users passwords at risk.

Tumblr iOS 3.3 - Cheshire Web Design

"We have just released a very important security update for our iPhone and iPad apps addressing an issue that allowed passwords to be compromised in certain circumstances," Derek Gottfrid, the platform's vice-president of product, said in a blog post.

As an additional footnote, Gottfrid elaborated that passwords were "sniffed" or detected while in transit on certain versions of the app and therefore urged all users to update to the latest version of the app.

The Tumblr blog post also advised users of its iOS apps to update their passwords on Tumblr as well as 'anywhere else you may have been using the same password'. Tumblr was allegedly notified of a "security vulnerability" in its iOS app earlier on Tuesday and had responded immediately on the matter - "We immediately released an update that repairs the issue and are notifying affected users. We obviously take these incidents very seriously and deeply regret this error," Barna said. She did not provide further details on the security issue.

In May, Tumblr was acquired by Yahoo and introduced a variety of changes to the UI including the introduction of 'Sponsored Posts' to the Dashboard.

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