Apple has released a new version of Safari, designed to address a recently reported security vulnerability.

Notes accompanying the release, which is available both through Software Update and as an online download, state: "This update is recommended for all Safari users and improves how Safari validates the authenticity of websites that use SSL certificates."

The update is Apple's swift response to a security vulnerability that existed in Safari, as reported by security specialist Secunia.

The vulnerability, which exists in Safari and the open-source Konqueror browser, makes it possible for malicious hackers to "spoof" Web sites because the browsers fail to validate SSL certificates correctly.