---
id: "CVE-2026-112555"
kind: "vulnerability"
aliases: ["CVE-2026-112555"]
title: "macOS: input validation flaw lets a malicious app escape its sandbox"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["endpoints", "infrastructure", "macos"]
not_affected_if: ["already-patched"]
published_at: "2026-10-26T21:17:48+00:00"
first_seen_at: "2026-10-26T21:20:28+00:00"
updated_at: "2026-10-26T21:27:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112555", "first_seen_at": "2026-10-26T21:20:28+00:00"}]
---

# macOS: input validation flaw lets a malicious app escape its sandbox

A validation flaw in macOS was fixed with improved input sanitization. A malicious app can use it to break out of its sandbox.

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

## How to check

- Run `sw_vers -productVersion` and compare against the fixed builds listed in the advisory.
- unknown

## Fix

- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia), or `26.7.2` (Tahoe) via Software Update.

## Timeline

- 2026-10-26T21:20:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112555

## From the sources

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. A malicious app may be able to break out of its sandbox.

---

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