CVE-2026-96394
Awaiting Analysis Awaiting Analysis - Queue

BaseFortify

Publication date: 2026-10-09

Last updated on: 2026-10-09

Assigner: Canva

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-09
Last Modified
2026-10-09
Generated
2026-10-19
AI Q&A
2026-10-09
EPSS Evaluated
2026-10-18
NVD
CVE-2026-96394
EUVD
EUVD-2026-95749

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
canva affinity 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-126 The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The Affinity by Canva macOS app before version 3.3.1 had a flaw where it did not check image dimensions against pixel data size when creating QuickLook thumbnails or previews for Affinity document files. This caused an out-of-bounds heap read, potentially exposing adjacent memory contents in the thumbnail or causing the extension to crash.

Detection Guidance

This vulnerability involves a flaw in the Affinity by Canva macOS application before version 3.3.1, where image dimensions are not validated against pixel data size. Detection would require checking the installed version of the application and monitoring for crashes or unusual thumbnail behavior in Finder.

Impact Analysis

If exploited, this vulnerability could allow an attacker to view sensitive data in memory through crafted Affinity documents when viewed in Finder. It might also crash the thumbnail or preview process, disrupting normal use.

Compliance Impact

This vulnerability could potentially lead to unauthorized disclosure of sensitive data through heap memory exposure in rendered thumbnails or previews. This may impact compliance with GDPR (data protection) and HIPAA (health information privacy) by risking unintended exposure of personal or health-related data during file previews.

Mitigation Strategies

Update the Affinity by Canva application for macOS to version 3.3.1 or later to address the vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-96394. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart