CVE-2021-47836: Jersou Markdown Explorer

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Markdown Explorer 0.1.1 contains a cross-site scripting vulnerability that allows attackers to inject malicious code through file uploads and editor inputs. Attackers can upload markdown files with embedded JavaScript payloads that execute in the application's privileged renderer context, allowing code execution on the host.

Affected products

• Jersou Markdown Explorer: version 0.1.1 only

Published 2026-01-16. Last modified 2026-06-17.