Critical 9.1Published Sep 30, 2026

CVE-2026-102103Kiteworks Email Protection Gateway server-side request forgery

Updated under an hour ago (2026-10-19 10:23 UTC)

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It affects Kiteworks Email Protection Gateway and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.71%, higher than 52% of scored CVEs.

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Every CVE for Kiteworks Email Protection Gateway

Exploited in the last 30 days

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.

CVSS: 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.71% (percentile 52)
Assigned by: cisa-cg
NVD analysis: Analyzed
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Kiteworks Email Protection Gateway kiteworks:email_protection_gateway (from the name)	before 9.5.0; 9.5.0 not affected	CNA record
accellion kiteworks accellion:kiteworks	before 9.5.0	NVD

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-p435-6c3j-4gh5vendor-advisory
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.jsonthird-party-advisory, broken-link

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.