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CVE-2026-103220

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 Canva 推出的 Affinity 应用 3.3.1 版本（2026 年 10 月发布）之前，当解析 Affinity 文档文件中的光栅图像数据时，该应用未进行充分的边界检查，导致发生越界读取并解引用不受信任的指针。威胁行为者可构造一个恶意的 Affinity 文档，当用户在 Affinity 中打开该文档时，可能导致内存损坏或应用程序崩溃。

CVSS 4.5 · Medium

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
canva affinity < 3.3.1 affected
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I. Basic Information for CVE-2026-103220

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Affinity by Canva application before 3.3.1 (October 2026 release) did not perform adequate bounds checking when parsing raster image data in Affinity document files, leading to an out-of-bounds read and the dereference of an untrusted pointer. A threat actor could craft an Affinity document that, when opened by a user in Affinity, could result in memory corruption or an application crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
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-2026-103220

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-103220

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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-2026-101094 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

Same product: affinity
Same vendor: canva
Same weakness: CWE-129

V. Comments for CVE-2026-103220

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