CVE-2026-102095

CRITICAL 9.1

Kiteworks Email Protection Gateway server-side request forgery

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to Server-Side Request Forgery. Kiteworks Email Protection Gateway performed server-side fetches of URLs contained in the message content it processed, without adequately restricting the fetch destination. A remote, unauthenticated sender could craft a message that caused the gateway to issue requests to internal services and cloud instance metadata endpoints and return the responses, potentially disclosing sensitive internal data and, depending on the internal service reached, affecting its state.

CWE	CWE-918
Vendor	kiteworks
Product	email protection gateway
Published	Sep 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Kiteworks / Email Protection Gateway

0 < 9.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/kiteworks/security-advisories/security/advisories/GHSA-f252-4w8q-g74g raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

Credits

truff, https://yeswehack.com/hunters/truff Icare, https://yeswehack.com/hunters/icare wlayzz, https://yeswehack.com/hunters/wlayzz