[Japanese]

JVNDB-2026-000092

Reflected cross-site scripting vulnerability in multiple laser printers and MFPs which implement Ricoh Web Image Monitor

Overview

Web Image Monitor provided by Ricoh Company, Ltd. is a web server that is included in and runs on laser printers and MFPs (multifunction printers).
Web Image Monitor contains the vulnerability listed below.
  • Reflected cross-site scripting (CWE-79) - CVE-2026-56809
Tomasz Holeksa of Pentest Limited reported this vulnerability to Ricoh Company, Ltd. directly and coordinated. After the coordination, Ricoh Company, Ltd. reported this case to IPA under Information Security Early Warning Partnership, and JPCERT/CC coordinated with Ricoh Company, Ltd. for JVN publication.
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 v4 Severity
Base Metrics: 5.1 (Medium) [IPA Score]
  • Access Vector (AV): Network
  • Attack Complexity (AC): Low
  • Attack Requirements (AT): None
  • Privileges Required (PR): None
  • User Interaction (UI): Active
    • Vulnerable System Impact
  • Confidentiality Impact (VC): None
  • Integrity Impact (VI): None
  • Availability Impact (VA): None
    • Subsequent System Impact
  • Confidentiality Impact (SC): Low
  • Integrity Impact (SI): Low
  • Availability Impact (SA): None
Affected Products


Ricoh Co., Ltd
  • Web Image Monitor implemented in specific products and versions

As for the details of affected product names and versions, refer to the information provided by the developer.
Impact

An arbitrary script may be executed on the web browser of the user who accesses Web Image Monitor.
Solution

[Update Web Image Monitor]
Update Web Image Monitor to the latest version according to the information provided by the developer.
Vendor Information

Ricoh Co., Ltd
CWE (What is CWE?)

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

  1. CVE-2026-56809
References

  1. JVN : JVN#48718197
Revision History

  • [2026/06/30]
      Web page was published

Date Public2026/06/30
Date First Published2026/06/30
Date Last Updated2026/06/30