CVE-2020-23478

7.5 highEPSS 1.2%

High (7.5) in leoeditor leo. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in leo 6.3.

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

Severity

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE: CWE-697
Published: 2021-09-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-x38q-xg2h-rxgx	PyPI	leo	<6.3	6.3
PYSEC-2021-338	PyPI	leo	<6.3	6.3