All vulnerabilities
CVE-2026-102127GHSA-9jwc-h943-6f84

Kiteworks Email Protection Gateway Improper Restriction of XML External Entity Reference

Kiteworks Email Protection GatewayNetwork & edge
Open in ThreatlineRecord JSON
CVSS
7.0High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in9.5.1Fixed versionCVE List
Published30 Sep 2026Updated 1 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted message to read files accessible to the gateway service account, including cryptographic key material and credentials, and have them sent to a destination they control.

Text from CVE List

Affected versions 2

  • Email Protection Gatewayaffected: all versions before 9.5.1CVE List
  • Email Protection Gatewayunaffected: 9.5.1CVE List

References 2