CVE-2026-96396
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.
CVE-2026-96396
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-96396
affinity
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "canva",
"product": "affinity",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "3.3.1",
"versionType": "semver"
}
],
"platforms": [
"MacOS"
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-96396
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #16385 · Revision 1
- Added to Heist Feed
- Publisher date