CVE-2026-81546 Memory corruption in Affinity
Attackers can execute arbitrary code by tricking users into opening malicious Affinity document files due to a stack-based buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81546?
CVE-2026-81546 is a high-severity memory corruption vulnerability in Canva Affinity, published on 17 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-121
Which versions are affected by CVE-2026-81546?
How do I fix CVE-2026-81546?
No fix has been published for CVE-2026-81546 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-81546 being exploited?
There is no known exploitation of CVE-2026-81546 in the wild and no public exploit code.
Sources
Also known as GHSA-fq87-2rvp-5478.