What is the CVSS score of CVE-2026-29092?

CVE-2026-29092 has a CVSS 3.1 base score of 4.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Kiteworks Email Protection Gateway are affected by CVE-2026-29092?

Organizations using Kiteworks should be aware of moderate risk from CVE-2026-29092 rated CVSS 4.9. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2026-29092?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Kiteworks Email Protection Gateway CVE-2026-29092

EUVD-2026-15807 MEDIUM

Insufficient Session Expiration (CWE-613)

2026-03-25 GitHub_M

Authentication Bypass Kiteworks Email Protection Gateway

4.9

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.9 MEDIUM

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

9.2.1

EUVD ID Assigned

Mar 25, 2026 - 17:17 euvd

EUVD-2026-15807

Analysis Generated

Mar 25, 2026 - 17:17 vuln.today

CVE Published

Mar 25, 2026 - 16:59 nvd

MEDIUM 4.9

DescriptionGitHub Advisory

Kiteworks is a private data network (PDN). Prior to version 9.2.1, a vulnerability in Kiteworks Email Protection Gateway session management allows blocked users to maintain active sessions after their account is disabled. This could allow unauthorized access to continue until the session naturally expires. Upgrade Kiteworks to version 9.2.1 or later to receive a patch.

AnalysisAI

A session management vulnerability in Kiteworks Email Protection Gateway versions prior to 9.2.1 allows disabled user accounts to maintain active sessions indefinitely until natural session expiration. An attacker with a disabled account could continue accessing the platform and potentially modify data or system settings without re-authentication. While this vulnerability has not been reported as actively exploited (KEV status not listed as in-the-wild), it represents a direct bypass of account suspension controls and warrants prompt patching.

Technical ContextAI

The vulnerability resides in the session management implementation of the Kiteworks Email Protection Gateway (CPE: cpe:2.3:a:kiteworks:kiteworks_email_protection_gateway:*:*:*:*:*:*:*:*), a private data network (PDN) component responsible for securing email communications. The root cause is classified under CWE-613 (Insufficient Session Expiration), which occurs when a system fails to properly invalidate or terminate active sessions when account status changes occur. Specifically, when an administrator disables a user account, the gateway does not revoke or invalidate any existing session tokens, allowing the disabled user's active sessions to persist with full authentication context intact until the session timeout is reached through normal lifecycle expiration.

RemediationAI

Upgrade Kiteworks Email Protection Gateway to version 9.2.1 or later immediately to receive the patch that properly invalidates sessions upon account disablement. Consult the official vendor security advisory at https://github.com/kiteworks/security-advisories/security/advisories/GHSA-92w7-fpjr-wpxc for detailed upgrade procedures and any interim mitigations. As a temporary compensating control, implement session monitoring and force manual session termination when accounts are disabled; configure user session policies to use shorter session timeout windows (e.g., 4-8 hours maximum) to reduce the window of exposure for disabled accounts with lingering sessions. Review audit logs for any active sessions from recently disabled users and manually revoke them.