What’s Vulnerable › Vulnerabilities

CVE-2020-23478

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-22 · updated 2026-06-17
• Weakness: CWE-697

Description

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: 6.2.1

References

• https://cwe.mitre.org/data/definitions/1333.html
• https://github.com/leo-editor/leo-editor/issues/1597
• https://cwe.mitre.org/data/definitions/1333.html
• https://github.com/leo-editor/leo-editor/issues/1597

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