CVE-2021-47837

HighCVSS 7.2/10Last modified Jun 17, 2026

Description

Markdownify 1.2.0 contains a persistent cross-site scripting vulnerability that allows attackers to store malicious payloads within markdown files. Attackers can upload crafted markdown files with embedded scripts 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
Jun 17, 2026
NVD status
Deferred

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CVE-2021-47837: High severity, CVSS 7.2 | Vulnix