---
title: "Apple ships its first background security update for iPhone, iPad and Mac"
description: "Without a full OS update, Apple fixed a Safari bug that could let a malicious site read another site's data."
url: https://kurddevelopers.com/en/news/apple-first-background-security-update-safari
language: en # English
type: news
published: 2026-03-17T20:10:00.000Z
updated: 2026-11-02T02:45:52.000Z
author: "Osamah Ismail"
author_url: https://kurddevelopers.com/en/author/1
section: "Security"
tags: ["Apple","Safari","WebKit","security","iOS 26"]
sources: ["Apple Security Updates","TechCrunch"]
image: https://kurddevelopers.com/uploads/2026/11/apple-logo-og-e918e3fa.jpg
translations:
  ku: https://kurddevelopers.com/news/apple-first-background-security-update-safari
  ar: https://kurddevelopers.com/ar/news/apple-first-background-security-update-safari
publisher: Kurd Developers
publisher_url: https://kurddevelopers.com/
---

# Apple ships its first background security update for iPhone, iPad and Mac

> Without a full OS update, Apple fixed a Safari bug that could let a malicious site read another site's data.

![Image: Apple](https://kurddevelopers.com/uploads/2026/11/apple-logo-og-e918e3fa.jpg)

## What's new?

Apple released its first "Background Security Improvement." This type of update arrives without a full iOS release and needs only a quick restart.

## What was the bug?

A flaw in WebKit, the engine behind Safari (CVE-2026-20643). According to Apple, maliciously crafted web content could bypass the Same Origin Policy, meaning a malicious site could access data from another site in the same browser session.

The bug was reported by Thomas Espach.

## Which devices?

- iOS 26.3.1 and iPadOS 26.3.1
- macOS 26.3.1 and macOS 26.3.2

Receiving this type of update requires iOS, iPadOS or macOS 26.1 or later.

## For you

If your device asks to restart, don't put it off.

**Sources:** Apple Security Updates, TechCrunch

---

Published by [Kurd Developers](https://kurddevelopers.com/) on 2026-03-17. Cite as: “Apple ships its first background security update for iPhone, iPad and Mac”, Kurd Developers, https://kurddevelopers.com/en/news/apple-first-background-security-update-safari