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 ↗

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

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

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