Usermin cross-site scripting vulnerabilties


Usermin is a web-based interface used to manage webmail. Usermin contains reflected cross-site scripting vulnerabilities in /filter/save_forward.cgi, /filter/save.cgi and /man/search.cgi.

Toshinobu Honjo of NTT Communications Corporation reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.1 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Webmin Project
  • Usermin versions prior to 1.690


An arbitrary script may be executed on a logged in user's web browser.

[Update the software]
Update to the latest version according to the information provided by the developer.
Vendor Information

Webmin Project
CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-4897

  1. JVN : JVN#32504719
  2. National Vulnerability Database (NVD) : CVE-2016-4897
Revision History

  • [2016/10/07]
      Web page was published
      References : Content was added