Advisoriesby IbisCanvaCVE-2026-81546
Canva Affinity: stack buffer overflow
Fix: upgrade to 3.3.0 or later
The Affinity by Canva application before 3.3.0 (September 2026 release) did not perform adequate bounds checking when parsing Affinity document files leading to a stack-based buffer overflow. A threat actor could craft a Affinity document that when opened by a user in Affinity could result in arbitrary code execution.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Affinity Product | < 3.3.0 | 3.3.0 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-121