Buffer overflow in Canva Affinity
CVE-2026-81546
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.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-81546?
- CVE-2026-81546 is a high-severity vulnerability in Canva Affinity, classified under Stack-based Buffer Overflow. CVSS score: 7.7/10. Published 2026-09-17.
- How severe is CVE-2026-81546?
- High severity. CVSS v3 base score is 7.7 out of 10.