CVE-2021-47837 - CVE House
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Status published Medium CVE-2021-47837

Markdownify 1.2.0 - Persistent Cross-Site Scripting

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • TaurusOmar

Affected Vendor

amitmerchant1990

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Affected Software

Markdownify
Vulnerable Versions:
1.2.0

Timeline

Official Publish: January 16th, 2026
Last Modified: March 5th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)