Vulnerability library
Security checkMay 08, 2026

fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Medium severitynpmfast-xml-parser

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

Description

No description available.

Recommendation

Update the fast-xml-parser package to the latest compatible version. Followings are version details:

  • Affected version(s): < 5.7.0
  • Patched version(s): 5.7.0

References

Could your website be exposed too?

SmartScanner can check your website for fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters and gives you actionable findings to investigate.

Start a free scan

Related Issues

See something that needs correcting? Let us knowUpdated May 08, 2026