Cross-site Scripting Vulnerability in Markup Markdown by Pierre-Henri Lavigne
CVE-2025-49420

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Markup Markdown
Vendor
CVE Published:
20 August 2025

What is CVE-2025-49420?

An improper neutralization of input during web page generation vulnerability in Markup Markdown allows for stored Cross-site Scripting (XSS). This flaw can enable attackers to inject arbitrary JavaScript into web pages viewed by users, leading to potential data theft or impersonation. The issue affects versions from n/a to 3.20.6.

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Deploy the Patch

Affected Version(s)

Markup Markdown <= 3.20.6

References

https://patchstack.com/database/wordpress/plugin/markup-m...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

JeonKim (Patchstack Alliance)
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