---
id: CVE-2026-96395
title: >-
  The Affinity by Canva app for macOS before 3.3.1 (October 2026 release) did
  not perform adequate bounds checking when generating QuickLook thumbnails and
  previews of Affinity document files, leading to an out-of-bounds heap read
summary: >-
  The Affinity by Canva app for macOS before 3.3.1 (October 2026 release) did
  not perform adequate bounds checking when generating QuickLook thumbnails and
  previews of Affinity document files, leading to an out-of-bounds heap read. A
  threa…
severity: low
cvss: 3.6
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L'
cwe:
  - CWE-125
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T17:16:51.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96395'
references:
  - url: 'https://trust.canva.com?tcuUid=1998378a-9134-47e9-b761-7a49d5fd6bfb'
    label: 61adb53e-e4b3-47f7-8a93-4717c9e77dc6
tags:
  - nvd
ingestedAt: '2026-10-09T13:58:52.549Z'
---

## Overview

The Affinity by Canva app for macOS before 3.3.1 (October 2026 release) did not perform adequate bounds checking when generating QuickLook thumbnails and previews of Affinity document files, leading to an out-of-bounds heap read. A threat actor could craft an Affinity document that, when displayed or previewed by a user in Finder, could disclose the contents of adjacent heap memory, including memory addresses, in the rendered thumbnail or preview image.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.