CVE-2026-96396

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-96396
StatePUBLISHED
AssignerCanva
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-09 13:17:13 UTC
Updated2026-10-09 17:16:51 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from 61adb53e-e4b3-47f7-8a93-4717c9e77dc6

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS: 0.001280000 probability, percentile 0.021570000 (date 2026-10-11)

Problem Types: CWE-122 | CWE-122 CWE-122 Heap-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.161adb53e-e4b3-47f7-8a93-4717c9e77dc6Secondary4.9MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
3.1CNACVSS4.9MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Canva Affinity affected 3.3.1 semver MacOS

References

ReferenceSourceLinkTags
trust.canva.com 61adb53e-e4b3-47f7-8a93-4717c9e77dc6 trust.canva.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Xusheng Li (en)

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