Stored Cross-Site Scripting Vulnerability in Kiteworks Core Software
CVE-2026-102126

8.1HIGH

Key Information:

Vendor

Kiteworks

Status
Core
Vendor
CVE Published:
30 September 2026

What is CVE-2026-102126?

A vulnerability in the Kiteworks Core software allows for stored cross-site scripting (XSS) attacks. This weakness enables an administrator with limited, delegated permissions to insert malicious content. When a privileged System Administrator views the affected page, the injected JavaScript executes within their session. This exploitation could lead to unauthorized escalation, allowing the lower-privileged administrator to gain full control over the tenant’s administration, including the ability to create new admin accounts.

Affected Version(s)

Core 0 < 9.5.1

Core 9.5.1

References

https://github.com/kiteworks/security-advisories/security...
vendor-advisory
https://raw.githubusercontent.com/cisagov/CSAF/develop/cs...
third-party-advisory

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Icare, https://yeswehack.com/hunters/icare
Supr4s, https://yeswehack.com/hunters/Supr4s
wlayzz, https://yeswehack.com/hunters/wlayzz
truff, https://yeswehack.com/hunters/truff
.