Is CVE-2026-102146 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-102146 being exploited in the wild.

How severe is CVE-2026-102146?

Medium severity, with a CVSS score of 6.5, published 30 September 2026.

Which products and versions are affected?

Kiteworks Email Protection Gateway before 9.5.1.

Is there a fix for CVE-2026-102146?

A patch was published on 2026-09-30: version 9.5.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-102146 attacked?

It is attacked over the network.

Am I affected by CVE-2026-102146?

Check whether you run Kiteworks Email Protection Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-102146: Kiteworks Email Protection Gateway arbitrary file write via template injection

CVE-2026-102146 · Severity: medium · CVSS 6.5 · Published 2026-09-30

Kiteworks Email Protection Gateway, which filters and secures email traffic for organizations, contains a vulnerability that allows a low-privileged administrator to write files with attacker-controlled content to any location on the system. An attacker exploiting this could modify application files, alter configuration settings, or shut down the email protection service, compromising email security and business continuity.

Technologies: Kiteworks Email Protection Gateway. Vendors: Kiteworks.

Quick answers

Is CVE-2026-102146 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-102146 being exploited in the wild.
How severe is CVE-2026-102146?: Medium severity, with a CVSS score of 6.5, published 30 September 2026.
Which products and versions are affected?: Kiteworks Email Protection Gateway before 9.5.1.
Is there a fix for CVE-2026-102146?: A patch was published on 2026-09-30: version 9.5.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102146 attacked?: It is attacked over the network.
Am I affected by CVE-2026-102146?: Check whether you run Kiteworks Email Protection Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in server-side template injection (CWE-1336) combined with external control of file paths (CWE-73), allowing authenticated administrators with limited delegated permissions to exceed their intended privileges. An attacker with network access and valid admin credentials can inject template expressions to write arbitrary files to locations accessible by the Email Protection Gateway service account, potentially altering application integrity or disrupting availability. The vulnerability is patched in version 9.5.1.

Affected products

Kiteworks Email Protection Gateway before 9.5.1

Timeline

2026-09-30: disclosed
2026-09-30: patched: version 9.5.1 released

References

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