CVE-2020-23478: Leoeditor Leo

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Leo Editor v6.2.1 was discovered to contain a regular expression denial of service (ReDoS) vulnerability in the component plugins/importers/dart.py.

Affected products

• Leoeditor Leo: version 6.2.1 only

Published 2021-09-22. Last modified 2026-06-17.