CVE-2023-31194: Diagon Project Diagon

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An improper array index validation vulnerability exists in the GraphPlanar::Write functionality of Diagon v1.0.139. A specially crafted markdown file can lead to memory corruption. A victim would need to open a malicious file to trigger this vulnerability.

Affected products

• Diagon Project Diagon: version 1.0.139 only

Published 2023-07-05. Last modified 2026-06-17.