# CVE-2026-102102: Kiteworks Email Protection Gateway Server-Side Request Forgery

Source: https://junglewise.ai/threats/cve-2026-102102-kiteworks-email-protection-gateway-before-version-9-5-0-is  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-102102 · Severity: critical · CVSS 9.1 · Published 2026-09-30

Kiteworks Email Protection Gateway is a secure email appliance that protects organizations by filtering and controlling email traffic. An unauthenticated attacker can exploit a server-side request forgery vulnerability to trick the gateway into making unauthorized requests to internal systems when processing inbound messages, potentially exposing sensitive data or causing service disruptions.

Technologies: [Kiteworks Email Protection Gateway](https://junglewise.ai/threats/technologies/email-protection-gateway). Vendors: [Kiteworks](https://junglewise.ai/threats/vendors/kiteworks).

## Quick answers

**Is CVE-2026-102102 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102102 being exploited in the wild.

**How severe is CVE-2026-102102?** Critical severity, with a CVSS score of 9.1, published 30 September 2026.

**Which products and versions are affected?** Kiteworks Email Protection Gateway before 9.5.0.

**Is there a fix for CVE-2026-102102?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102102 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-102102?** Check whether you run Kiteworks Email Protection Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A Server-Side Request Forgery (CWE-918) exists in the certificate retrieval functionality of Kiteworks Email Protection Gateway versions before 9.5.0. The vulnerability is triggered during inbound message processing when the gateway retrieves issuer certificates and fails to properly validate the request destination. A remote, unauthenticated attacker can exploit this via network access to induce requests to internal or unintended destinations, potentially disclosing sensitive information or disrupting availability.

## Affected products

- Kiteworks Email Protection Gateway before 9.5.0

## Timeline

- 2026-09-30: disclosed

## References

- [https://github.com/kiteworks/security-advisories/security/advisories/GHSA-jxv9-v53f-c79m](https://github.com/kiteworks/security-advisories/security/advisories/GHSA-jxv9-v53f-c79m)
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json)

## Related threats

- [Kiteworks Email Protection Gateway improper access control on certificate assignment](https://junglewise.ai/threats/cve-2026-102149-kiteworks-email-protection-gateway-did-not-sufficiently-restrict)
- [Kiteworks Email Protection Gateway arbitrary file write via template injection](https://junglewise.ai/threats/cve-2026-102146-an-authenticated-email-protection-gateway-administrator-holding)
- [Kiteworks Email Protection Gateway resource exhaustion](https://junglewise.ai/threats/cve-2026-102144-a-resource-exhaustion-vulnerability-in-kiteworks-email)
- [Kiteworks Email Protection Gateway unauthenticated file upload](https://junglewise.ai/threats/cve-2026-102143-an-unauthenticated-attacker-could-cause-a-file-with-attacker)
- [Kiteworks Email Protection Gateway authorization bypass in large file exchange](https://junglewise.ai/threats/cve-2026-102139-an-authorization-check-in-the-large-file-exchange-feature-of)