Skip to main content

XML injection (XXE) - Unmarshaller


The XML unmarshaller is not configured securely. It allows to read a source of XML data and bind its values to a new instance of an object.


  • Escalate attack to compromise the underlying server or other back-end infrastructure.
  • Allow an attacker to view files on the application server filesystem.
  • Interact with any back-end or external systems that the application itself can access.
  • Disclosure of confidential data.


The XML unmarshaller should be configured securely so that it does not allow external entities as part of an incoming XML attack.


Anonymous attacker from the Internet.

Expected Remediation Time

⌚ minutes.


Default score using CVSS 3.1. It may change depending on the context of the src.


  • Attack vector: N
  • Attack complexity: L
  • Privileges required: N
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: L
  • Availability: N


  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: X


  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:X
  • Score:
    • Base: 6.5
    • Temporal: 5.9
  • Severity:
    • Base: Medium
    • Temporal: Medium



free trial

Search for vulnerabilities in your apps for free with our automated security testing! Start your 21-day free trial and discover the benefits of our Continuous Hacking Machine Plan. If you prefer a full service that includes the expertise of our ethical hackers, don't hesitate to contact us for our Continuous Hacking Squad Plan.