CVE-2026-96396
Quick assessment
Affected
canva affinity
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Canva 公司的 Affinity 应用在 macOS 上，版本低于 3.3.1（2026年10月发布）时，在生成 Affinity 文档文件的 QuickLook 缩略图和预览时，未能安全地计算图像缓冲区的大小，从而导致整数溢出和基于堆的缓冲区溢出。恶意攻击者可构造一个特制的 Affinity 文档，当用户在访达（Finder）中查看或预览该文档时，可能导致堆内存被破坏，并使缩略图或预览扩展程序崩溃。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-96396
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Affinity by Canva application for macOS before 3.3.1 (October 2026 release) did not safely calculate the size of an image buffer when generating QuickLook thumbnails and previews of Affinity document files, leading to an integer overflow and a heap-based buffer overflow. A threat actor could craft an Affinity document that, when displayed or previewed by a user in Finder, could corrupt heap memory and cause the thumbnail or preview extension to crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-96396
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Same Patch Batch · canva · 2026-10-09 · 7 CVEs total
| CVE-2026-103220 | 4.5 MEDIUM | Affinity 3.3.1前版本图像解析越界读漏洞 |
| CVE-2026-101094 | 3.6 LOW | Affinity 3.3.1前堆缓冲区越界读取致内存泄露或崩溃 |
| CVE-2026-96395 | 3.6 LOW | macOS Affinity <3.3.1 堆越界读取漏洞 |
| CVE-2026-96393 | 3.6 LOW | Affinity 3.3.1前越界指针解引用致崩溃 |
| CVE-2026-101130 | 3.6 LOW | Affinity 3.3.1前堆缓冲区越读漏洞 |
| CVE-2026-96394 | 2.9 LOW | Affinity for macOS <3.3.1 存在越界堆读取漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-96396
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