CVE-2026-102103: accellion kiteworks

CVSS 9.1 (critical) · published 2026-09-30

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 retrieves a certificate revocation list in an inbound message. Depending on the services reachable from the gateway, this could disclose sensitive internal information or disrupt gateway operation.

Affected products (NVD): accellion kiteworks

Fixed in (NVD): 9.5.0

Weakness: CWE-918

Source: NVD CVE-2026-102103

References

• https://github.com/kiteworks/security-advisories/security/advisories/GHSA-p435-6c3j-4gh5
• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

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