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CVE-2026-112356— GFI KerioConnect < 10.0.9p2 XSS via Link Auto-Formatter

Quick assessment

Affected
GFI USA, LLC GFI KerioConnect
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GFI KerioConnect（Kerio Connect）10.0.9 Patch 2 之前的版本中，Webmail 组件存在跨站脚本（XSS）漏洞。远程攻击者可通过发送一封精心构造的电子邮件（其文本内容本身已包含在链接中），利用 Webmail 会话中链接自动格式化器对已链接文本的重新处理机制，通过引号字符突破 属性，注入由攻击者控制的标记，从而在受害者的已认证 Webmail 会话中执行恶意脚本。该漏洞可被用于伪造链接目标或向邮件中注入 HTML 内容。

CVSS 6.1 · Medium
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I. Basic Information for CVE-2026-112356

Vulnerability Information
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Vulnerability Title
GFI KerioConnect < 10.0.9p2 XSS via Link Auto-Formatter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GFI USA, LLC GFI KerioConnect 0 ~ 10.0.9p2 -

II. Public POCs for CVE-2026-112356

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III. Intelligence Information for CVE-2026-112356

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Vendor Pages for CVE-2026-112356 (1)

Other References for CVE-2026-112356 (1)

IV. Related Vulnerabilities

Same product: GFI KerioConnect
Same vendor: GFI USA, LLC
Same weakness: CWE-79