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Improper Restriction of XML External Entity Reference

CVE-2024-45490

High
7.5/10

Summary

An issue was discovered in libexpat versions prior to 2.6.3. The "xmlparse.c" does not reject a negative length for "XML_ParseBuffer".

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-611 - Improper Restriction of XML External Entity Reference

Listed 4th in the 'OWASP Top Ten', XML External Entities (XXE) vulnerability allows attackers to provide an XML input that contains an external entity. When the XML is parsed, it can cause data extraction and manipulation, execution of commands, denial-of-service attacks, and server-side request forgery.

References

Advisory Timeline

  • Published