Cross Site Scripting in Optimal IdM OptimalCloud by Optimal IdM
CVE-2026-113383

5.3MEDIUM

Key Information:

Vendor

Optimal Idm

Status
Optimalcloud
Vendor
CVE Published:
20 October 2026

What is CVE-2026-113383?

A cross site scripting vulnerability exists in the Optimal IdM OptimalCloud version 5.0, specifically in the public Login page of the web application. The vulnerability allows attackers to manipulate the 'tz' argument to execute arbitrary scripts in the context of the user's browser. This remote code execution can lead to various attacks including data theft and session hijacking. Despite attempts to notify the vendor, Optimal IdM has not provided a response regarding this security issue.

Affected Version(s)

OptimalCloud 5.0

References

https://vuldb.com/vuln/422656
vdb-entrytechnical-description
https://vuldb.com/vuln/422656/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-113383
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alexandre Rodrigo (VulDB User)
VulDB CNA Team
.