CVE-2026-102104GHSA-mqw3-m87w-4fx4
Kiteworks Email Protection Gateway server-side request forgery
Kiteworks Email Protection GatewayNetwork & edge
CVSS
9.1CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.71%Chance of exploitation activity in the next 30 days, higher than 53% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 9.5.0Email Protection GatewayCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to Server-Side Request Forgery (SSRF). A server-side request forgery (SSRF) weakness in Kiteworks Email Protection Gateway could allow a remote, unauthenticated attacker to induce the gateway to issue crafted requests to internal or otherwise unintended network destinations. The requests are triggered while the gateway performs an online certificate status check for an inbound message. Depending on the services reachable from the gateway, this could disclose sensitive internal information or disrupt gateway operation.
Text from CVE List
Affected versions 2
- Email Protection Gatewayaffected: all versions before 9.5.0CVE List
- Email Protection Gatewayunaffected: 9.5.0CVE List