Vulnerability library
Security checkFebruary 27, 2026

fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names

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High severitynpmfast-xml-parser

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Description

No description available.

Recommendation

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

  • Affected version(s): **>= 4.1.3, < 4.5.4 >= 5.0.0, < 5.3.5**
  • Patched version(s): **4.5.4 5.3.5**

References

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Related Issues

See something that needs correcting? Let us knowUpdated February 27, 2026