Paper/Archive/CVE-2026-102104

CVE-2026-102104

Kiteworks Email Protection Gateway — Kiteworks Email Protection Gateway server-side request forgery

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 53.6.536 × 2010.7 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Email Protection Gateway< 9.5.09.5.0CNA

Scores by source

cisa-cg (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

advisorygithub.com/kiteworks/security-advisories/security/advisories/GHSA-mqw3-m87w-4fx4 writeupraw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json