CVE-2026-102131: CWE-94 Improper Control of Generation of Code ('Code Injection') in Kiteworks Email Protection Gateway
CVE-2026-102131 is a high-severity vulnerability in Kiteworks Email Protection Gateway that allows an authenticated administrator to bypass certain configuration validation checks. This flaw arises because the gateway does not recognize all forms of configuration input, enabling an attacker to write and execute arbitrary files as the gateway service account. The vulnerability affects versions prior to 9.5.0.
AI Analysis
Technical Summary
Kiteworks Email Protection Gateway improperly controls the generation of code due to incomplete validation of configuration settings. Although the gateway rejects certain configurations, it fails to recognize every form in which these settings can be supplied. An authenticated administrator can exploit this by supplying an unrecognized form of configuration to write a file of their choosing to the system and execute it, resulting in code execution with the privileges of the gateway service account. This vulnerability is tracked as CWE-94 (Improper Control of Generation of Code) and CWE-178 (Improper Neutralization of Code).
Potential Impact
Successful exploitation allows an authenticated administrator to execute arbitrary code on the gateway with the privileges of the gateway service account. This can lead to full compromise of the gateway, including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (Confidentiality: High, Integrity: High, Availability: High).
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict administrative access to trusted personnel only and monitor for suspicious configuration changes.
CVE-2026-102131: CWE-94 Improper Control of Generation of Code ('Code Injection') in Kiteworks Email Protection Gateway
Description
CVE-2026-102131 is a high-severity vulnerability in Kiteworks Email Protection Gateway that allows an authenticated administrator to bypass certain configuration validation checks. This flaw arises because the gateway does not recognize all forms of configuration input, enabling an attacker to write and execute arbitrary files as the gateway service account. The vulnerability affects versions prior to 9.5.0.
CVSS v3.1
Score 7.2high
Affected software
Kiteworks
Email Protection Gateway
pkg:github/kiteworks/email-protection-gatewayRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Kiteworks Email Protection Gateway improperly controls the generation of code due to incomplete validation of configuration settings. Although the gateway rejects certain configurations, it fails to recognize every form in which these settings can be supplied. An authenticated administrator can exploit this by supplying an unrecognized form of configuration to write a file of their choosing to the system and execute it, resulting in code execution with the privileges of the gateway service account. This vulnerability is tracked as CWE-94 (Improper Control of Generation of Code) and CWE-178 (Improper Neutralization of Code).
Potential Impact
Successful exploitation allows an authenticated administrator to execute arbitrary code on the gateway with the privileges of the gateway service account. This can lead to full compromise of the gateway, including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (Confidentiality: High, Integrity: High, Availability: High).
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict administrative access to trusted personnel only and monitor for suspicious configuration changes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisa-cg
- Date Reserved
- 2026-09-28T17:39:13.563Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abd724f2a4e24523d8ebe1a
Added to database: 09/30/2026, 20:34:23 UTC
Last enriched: 09/30/2026, 21:03:18 UTC
Last updated: 10/01/2026, 04:47:04 UTC
Views: 8
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