Quick answers
- Is CVE-2026-96396 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96396 being exploited in the wild.
- How severe is CVE-2026-96396?
- Medium severity, with a CVSS score of 4.9, published 9 October 2026.
- Which products and versions are affected?
- Canva Affinity before 3.3.1 (October 2026 release).
- Is there a fix for CVE-2026-96396?
- Yes: fixed in 3.3.1 (October 2026 release). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-96396 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-96396?
- Check whether you run Canva Affinity at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 3.3.1 (October 2026 release)
Technical details
An integer overflow in image buffer size calculation within the QuickLook preview extension leads to a heap-based buffer overflow when processing Affinity document files. The vulnerability is triggered when a user displays or previews a maliciously crafted document in Finder, requiring no user authentication or special privilege beyond the ability to view files. The impact is denial of service via preview extension crash; memory corruption may occur but exploitation for code execution is not indicated.
Affected products
- Canva Affinity before 3.3.1 (October 2026 release)
Timeline
- 2026-10-09: disclosed