CVE-2026-102144: CWE-306 Missing Authentication for Critical Function in Kiteworks Email Protection Gateway
CVE-2026-102144 is a resource exhaustion vulnerability in Kiteworks Email Protection Gateway that allows an unauthenticated remote attacker to repeatedly invoke an expensive server-side operation, leading to a partial denial of service condition. The vulnerability stems from missing authentication on a critical function, enabling abuse without credentials. No CVSS score is provided, and no known exploits are reported in the wild. The affected versions include all releases from initial versions up to but not including 9.5.1.
AI Analysis
Technical Summary
This vulnerability involves missing authentication controls (CWE-306) on a critical function within Kiteworks Email Protection Gateway, which can be exploited by an unauthenticated attacker to trigger a resource-intensive operation repeatedly. This results in resource exhaustion (CWE-400), causing a partial denial of service. The flaw affects versions prior to 9.5.1. No patch information is provided, and no active exploitation has been reported.
Potential Impact
An unauthenticated remote attacker can cause a partial denial of service by repeatedly triggering a costly server-side operation, potentially degrading service availability for legitimate users. There is no indication of data compromise or privilege escalation from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected service where possible and monitor for unusual request patterns that may indicate exploitation attempts.
CVE-2026-102144: CWE-306 Missing Authentication for Critical Function in Kiteworks Email Protection Gateway
Description
CVE-2026-102144 is a resource exhaustion vulnerability in Kiteworks Email Protection Gateway that allows an unauthenticated remote attacker to repeatedly invoke an expensive server-side operation, leading to a partial denial of service condition. The vulnerability stems from missing authentication on a critical function, enabling abuse without credentials. No CVSS score is provided, and no known exploits are reported in the wild. The affected versions include all releases from initial versions up to but not including 9.5.1.
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
This vulnerability involves missing authentication controls (CWE-306) on a critical function within Kiteworks Email Protection Gateway, which can be exploited by an unauthenticated attacker to trigger a resource-intensive operation repeatedly. This results in resource exhaustion (CWE-400), causing a partial denial of service. The flaw affects versions prior to 9.5.1. No patch information is provided, and no active exploitation has been reported.
Potential Impact
An unauthenticated remote attacker can cause a partial denial of service by repeatedly triggering a costly server-side operation, potentially degrading service availability for legitimate users. There is no indication of data compromise or privilege escalation from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected service where possible and monitor for unusual request patterns that may indicate exploitation attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisa-cg
- Date Reserved
- 2026-09-28T17:39:13.564Z
- State
- PUBLISHED
Threat ID: 6abd72532a4e24523d8ec0db
Added to database: 09/30/2026, 20:34:27 UTC
Last enriched: 09/30/2026, 20:48:56 UTC
Last updated: 10/01/2026, 03:49:05 UTC
Views: 10
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