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Exposure of Sensitive Information to an Unauthorized Actor


Severity Medium
Score 5.3/10


Umbraco is an ASP.NET content management system (CMS). In versions 8.0.0 through 8.18.9, 9.0.0-beta001 through 10.8.0, and 11.0.0-rc1 through 12.3.3, a brute force exploit can be used to collect valid usernames.

  • LOW
  • NONE
  • NONE
  • NONE
  • LOW
  • NONE

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.


Advisory Timeline

  • Published