CVE-2026-112356

GFI KerioConnect < 10.0.9p2 XSS via Link Auto-Formatter

State: Published
Severity: 5.1 Medium
Published: Oct 28, 2026
Updated: Oct 28, 2026
Reserved: Oct 19, 2026

Description

GFI KerioConnect (Kerio Connect) before 10.0.9 Patch 2 contains a cross-site scripting vulnerability in the Webmail component that allows a remote attacker to spoof link targets or inject HTML into a message as rendered in a victim's authenticated Webmail session by sending a crafted email whose text is already inside a link. Attackers can exploit the link auto-formatter's re-processing of already-linked text, using quote characters to break out of the href attribute and inject attacker-controlled markup to execute script in the victim's session.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N	VulnCheck
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-83 Improper Neutralization of Script in Attributes in a Web Page

Affected Products

Product	Versions
GFI KerioConnectGFI USA, LLC	before 10.0.9p2Affected

References

Release Notesrelease-notespatch
VulnCheck Advisory: GFI KerioConnect < 10.0.9p2 HTML Injection via Link Auto-Formatterthird-party-advisory

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