CVE-2021-47839

HighCVSS 7.2/10Last modified Jul 15, 2026

Description

Marky 0.0.1 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the file is opened, potentially enabling remote code execution.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Jan 16, 2026
Last modified
Jul 15, 2026
NVD status
Deferred

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CVE-2021-47839: High severity, CVSS 7.2 | Vulnix