---
id: "CVE-2026-113952"
kind: "vulnerability"
aliases: ["CVE-2026-113952"]
title: "Safari: a logic flaw lets a website use a Lockdown Mode-restricted media format"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["ios", "ipados", "lockdown-mode", "macos", "runtime", "safari"]
not_affected_if: ["patched-versions"]
published_at: "2026-10-26T21:18:11+00:00"
first_seen_at: "2026-10-26T21:20:31+00:00"
updated_at: "2026-10-26T21:21:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113952", "first_seen_at": "2026-10-26T21:20:31+00:00"}]
---

# Safari: a logic flaw lets a website use a Lockdown Mode-restricted media format

A logic flaw in Safari and other Apple browsers let a website use a media format that Lockdown Mode should block. The sources do not describe code execution or data theft beyond that.

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

## How to check

- Check the Safari version under Safari > About Safari, and the iOS/iPadOS/macOS version under Settings > General > About.
- Check whether Lockdown Mode is enabled under Settings > Privacy & Security > Lockdown Mode.

## Fix

- Update Safari to `27.2`, or iOS and iPadOS to `26.7.2` or `27.2`, or macOS to `27.2` (Golden Gate).

## Timeline

- 2026-10-26T21:20:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113952

## From the sources

A logic issue was addressed with improved checks. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2. A website may be able to use a media format that should be restricted in Lockdown Mode.

---

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