CVE-2026-96394CWE-126

CVE-2026-96394

Low · published October 9, 2026

CVSS v3.1
2.9
EPSS
0%
Percentile
2.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00132 · 2.5th percentile
Weakness
CWE-126 · Buffer Over-read
Published
2026-10-09T17:17Z
References (1)
https://trust.canva.com?tcuUid=1998378a-9134-47e9-b761-7a49d5fd6bfb · 61adb53e-e4b3-47f7-8a93-4717c9e77dc6
EPSS history
Timeline
  • 11 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 09 OCT 12:38Z
    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…
    cvelistv5
  • 09 OCT 12:38Z
    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…
    cvelistv5