---
id: "CVE-2026-113903"
kind: "vulnerability"
aliases: ["CVE-2026-113903"]
title: "Safari and Apple OSes: use-after-free lets crafted web content modify memory"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["ios", "ipados", "macos", "other", "safari", "visionos", "webkit"]
not_affected_if: ["already-updated-to-27.2"]
published_at: "2026-10-26T21:18:07+00:00"
first_seen_at: "2026-10-26T21:20:30+00:00"
updated_at: "2026-10-26T21:22:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113903", "first_seen_at": "2026-10-26T21:20:30+00:00"}]
---

# Safari and Apple OSes: use-after-free lets crafted web content modify memory

A use-after-free bug in WebKit-based Safari and Apple operating systems can be triggered by maliciously crafted web content. A successful attack may lead to unexpected modification of memory in the browser.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Safari version on macOS or iOS and compare it with the fixed release `27.2` or later
- Check the iOS, iPadOS, macOS or visionOS version in Settings > General > About and compare it with `27.2` or later
- unknown for any further detail the sources do not give

## Fix

- Update Safari to `27.2` or later
- Update iOS and iPadOS to `27.2` or later
- Update macOS (listed as Golden Gate) and visionOS to `27.2` or later

## Timeline

- 2026-10-26T21:20:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113903

## From the sources

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. Processing maliciously crafted web content may lead to unexpected memory modification.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_