Cross site scripting in markdown-to-jsx

Description

Versions of the package markdown-to-jsx before 7.4.0 are vulnerable to Cross-site Scripting (XSS) via the src property due to improper input sanitization. An attacker can execute arbitrary code by injecting a malicious iframe element in the markdown.

Recommendation

Update the markdown-to-jsx package to the latest compatible version. Followings are version details:

• Affected version(s): < 7.4.0
• Patched version(s): 7.4.0

References

• GHSA-4wx3-54gh-9fr9
• security.snyk.io
• CVE-2024-21535
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• tarteaucitron Cross-site Scripting (XSS) - CVE-2025-1467
• uPlot Prototype Pollution vulnerability - CVE-2024-21489
• FUXA local file inclusion vulnerability - CVE-2023-31718
• FUXA vulnerable to Local File Inclusion - CVE-2023-31716

Tags:

npm

markdown-to-jsx