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Improper Restriction of XML External Entity Reference

CVE-2021-21659

Medium
5.5/10

Summary

Jenkins URLTrigger Plugin 0.48 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

  • LOW
  • NETWORK
  • SINGLE
  • NONE
  • PARTIAL
  • PARTIAL

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