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CVE-2026-102146— Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection

Quick assessment

Affected
Kiteworks Email Protection Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

持有有限委托权限的已认证邮件防护网关（Email Protection Gateway）管理员，能够将攻击者控制的内容写入邮件防护网关服务账户可访问的任意位置。此行为超出了该管理员的预期权限范围，可能被用于篡改应用程序文件和配置，或导致服务可用性中断。

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-102146

Vulnerability Information
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Vulnerability Title
Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kiteworks Email Protection Gateway 0 ~ 9.5.1 -

II. Public POCs for CVE-2026-102146

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III. Intelligence Information for CVE-2026-102146

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Vendor Advisories for CVE-2026-102146 (1)

Other References for CVE-2026-102146 (1)

Same Patch Batch · Kiteworks · 2026-09-30 · 61 CVEs total

CVE-2026-102115 9.8 CRITICAL Kiteworks Core Authentication Bypass in the Password Reset Workflow
CVE-2026-102149 9.4 CRITICAL Kiteworks Email Protection Gateway Improper Access Control
CVE-2026-102147 9.3 CRITICAL Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)
CVE-2026-102104 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102095 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102102 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102105 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102103 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102106 9.1 CRITICAL Kiteworks Email Protection Gateway improper authentication
CVE-2026-102120 8.8 HIGH Kiteworks Core OS Command Injection
CVE-2026-102125 8.8 HIGH Kiteworks Core Sandbox Escape
CVE-2026-102092 8.7 HIGH Kiteworks Core stored XSS
CVE-2026-102100 8.7 HIGH Kiteworks Core stored XSS
CVE-2026-102121 8.6 HIGH Kiteworks Secure Data Forms Exposure of Sensitive Information to an Unauthorized Actor
CVE-2026-102126 8.1 HIGH Kiteworks Core Stored Cross-site Scripting (XSS)
CVE-2026-102101 8.1 HIGH Kiteworks Core deserialization of untrusted data
CVE-2026-102112 7.8 HIGH Kiteworks Core Local Privilege Escalation
CVE-2026-102118 7.8 HIGH Kiteworks Core before version 9.5.0 is vulnerable to Local Privilege Escalation
CVE-2026-102113 7.8 HIGH Kiteworks Core Local Privilege Escalation
CVE-2026-102143 7.5 HIGH Kiteworks Email Protection Gateway Unrestricted Upload of File with Dangerous Type

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Email Protection Gateway
Same vendor: Kiteworks
Same weakness: CWE-73

V. Comments for CVE-2026-102146

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