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CVE-2026-96394

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.

在 macOS 平台上，Canva 的 Affinity 应用程序在 3.3.1 版本（2026 年 10 月发布）之前，在生成 Affinity 文档文件的 QuickLook 缩略图和预览时，未对图像尺寸与像素数据大小进行验证，从而导致堆越界读取漏洞。攻击者可以构造一个恶意的 Affinity 文档，当用户在 Finder 中查看或预览该文档时，可能导致渲染的缩略图或预览图像泄露相邻堆内存内容，或致使缩略图或预览扩展程序崩溃。

CVSS 2.9 · Low

Affected Version Matrix 1

VendorProduct Version RangeStatus
canva affinity < 3.3.1 affected
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I. Basic Information for CVE-2026-96394

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 validate image dimensions against the size of the pixel data 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 in the rendered thumbnail or preview image, or 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:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
canva affinity 0 ~ 3.3.1 -

II. Public POCs for CVE-2026-96394

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III. Intelligence Information for CVE-2026-96394

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Same Patch Batch · canva · 2026-10-09 · 7 CVEs total

CVE-2026-96396 4.9 MEDIUM Affinity macOS < 3.3.1 整数溢出致堆缓冲区溢出
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

IV. Related Vulnerabilities

Same product: affinity
Same vendor: canva
Same weakness: CWE-126

V. Comments for CVE-2026-96394

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