---
title: "CVE-2026-112353: GFI KerioConnect - Stored XSS"
description: "GFI KerioConnect before 10.0.8 Patch 2 contains a stored XSS caused by insufficient sanitization of event-handler attributes in SVG email attachments in the Webmail component, letting remote attackers execute scripts in authenticated sessions, exploit requires victim to open crafted attachment."
url: https://panop.io/threat-heartbeat/CVE-2026-112353/
---

# CVE-2026-112353 GFI KerioConnect - Stored XSS

GFI KerioConnect before 10.0.8 Patch 2 contains a stored XSS caused by insufficient sanitization of event-handler attributes in SVG email attachments in the Webmail component, letting remote attackers execute scripts in authenticated sessions, exploit requires victim to open crafted attachment.

CVSS base score 8.2 /10

High

CISA KEV

Exploited in the wild

Public exploit

None known

Authentication

Not required

EPSS

0.24% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-112353)

## Details

Type

Stored XSS

Impact

Client Script Exec, Information Disclosure

CVSS vector

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

Published

27 October 2026

Updated

29 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to version 10.0.8 Patch 2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-112353](https://nvd.nist.gov/vuln/detail/CVE-2026-112353)
- [https://www.vulncheck.com/advisories/gfi-kerioconnect-8p2-stored-xss-via-svg-attachment](https://www.vulncheck.com/advisories/gfi-kerioconnect-8p2-stored-xss-via-svg-attachment)
- [https://www.cve.org/CVERecord?id=CVE-2026-112353](https://www.cve.org/CVERecord?id=CVE-2026-112353)
- [https://gfi.ai/resource/kerioconnect-product-releases/](https://gfi.ai/resource/kerioconnect-product-releases/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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