# CVE-2026-96396

> CVE-2026-96396. CVSS 4.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-96396
Last updated: 2026-10-09T17:16:51Z

- Published: 2026-10-09 12:43 UTC · Updated: 2026-10-09 17:16 UTC · Assigner: Canva
- CVSS: 4.9 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS: 0.10%, 1th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-122

## Description

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.

## Affected vendors and products

- canva: affinity

## Tracked companies

- [Canva](https://rewindex.com/company/canva.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-96396)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-96396)
- [https://trust.canva.com?tcuUid=1998378a-9134-47e9-b761-7a49d5fd6bfb](https://trust.canva.com?tcuUid=1998378a-9134-47e9-b761-7a49d5fd6bfb)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-96396 · Markdown: https://rewindex.com/cve/CVE-2026-96396.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-96396 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:03:26.847Z