Cross-Site Scripting Flaw in Markdown-it by Markdown-it
CVE-2025-7969

6.9MEDIUM

Key Information:

Vendor

Markdown-it

Status
Markdown-it
Vendor
CVE Published:
21 August 2025

What is CVE-2025-7969?

A Cross-Site Scripting (XSS) vulnerability has been identified in Markdown-it, a popular JavaScript library for parsing Markdown. This security issue arises from improper neutralization of user input during web page generation, allowing attackers to inject malicious scripts that could be executed in the context of the user's browser. Specifically, this vulnerability is present in the program files located in lib/renderer.mjs. Users of Markdown-it version 14.1.0 should take immediate steps to secure their applications and ensure that input handling is properly sanitized to mitigate the risk of XSS attacks.

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Deploy the Patch

Affected Version(s)

markdown-it 14.1.0

References

https://fluidattacks.com/advisories/fito
third-party-advisory
https://github.com/markdown-it/markdown-it
product

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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