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CVE-2026-34241— CtrlPanel: Stored XSS in Ticket Reply Notifications Allows Session Hijacking

Quick assessment

Affected
Ctrlpanel-gg panel
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CtrlPanel.gg是CtrlPanel.gg开源的一款主机服务计费管理工具。 CtrlPanel.gg 1.1.1及之前版本存在跨站脚本漏洞，该漏洞源于工单回复通知系统中未对回复内容进行清理，直接存储到数据库通知负载中，并通过Blade的{!! !!}语法未转义渲染，可能导致存储型跨站脚本攻击。

CVSS 8.7 · High EPSS 0.45% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ctrlpanel-gg panel < 1.2.0 affected
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I. Basic Information for CVE-2026-34241

Vulnerability Information
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Vulnerability Title
CtrlPanel: Stored XSS in Ticket Reply Notifications Allows Session Hijacking
Source: CVE Program / CVE List V5
Vulnerability Description
CtrlPanel is open-source billing software for hosting providers. Versions 1.1.1 and prior contain a Stored Cross-Site Scripting (XSS) vulnerability in the ticket reply notification system. Unsanitized reply content ($newmessage) is stored directly in database notification payloads and later rendered unescaped via Blade's {!! !!} syntax in the recipient's browser. The flaw exists in both App\Notifications\Ticket\Admin\AdminReplyNotification (triggered when a user replies, targeting admins) and App\Notifications\Ticket\User\ReplyNotification (triggered when an admin replies, targeting users), allowing arbitrary JavaScript execution in the victim's session context. A low-privileged attacker can exploit this to hijack admin sessions, harvest credentials via fake login prompts or keyloggers, and escalate privileges by performing administrative actions on the victim's behalf. The reverse path also enables a malicious or compromised admin to target regular users in the same manner. This issue has been fixed in version 1.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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
Vulnerability Title
CtrlPanel.gg 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CtrlPanel.gg是CtrlPanel.gg开源的一款主机服务计费管理工具。 CtrlPanel.gg 1.1.1及之前版本存在跨站脚本漏洞，该漏洞源于工单回复通知系统中未对回复内容进行清理，直接存储到数据库通知负载中，并通过Blade的{!! !!}语法未转义渲染，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ctrlpanel-gg panel < 1.2.0 -

II. Public POCs for CVE-2026-34241

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8709 chars
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III. Intelligence Information for CVE-2026-34241

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Vendor Advisories for CVE-2026-34241 (1)

Other References for CVE-2026-34241 (1)

Same Patch Batch · Ctrlpanel-gg · 2026-05-19 · 6 CVEs total

CVE-2026-34234 10.0 CRITICAL CtrlPanel: Unauthenticated RCE using installer script
CVE-2026-34358 8.1 HIGH CtrlPanel: Missing Authorization on Admin Write Endpoints Allows RBAC Bypass
CVE-2026-34216 6.6 MEDIUM CtrlPanel: Authenticated Remote Code Execution via Dynamic Class Instantiation in Settings
CVE-2026-34233 6.5 MEDIUM CtrlPanel has Missing Authentication Checks in Datatable Admin Endpoints
CVE-2026-34246 4.8 MEDIUM CtrlPanel: Stored XSS in Admin Role Management via Unescaped DataTable HTML Output

IV. Related Vulnerabilities

Same product: panel
Same vendor: Ctrlpanel-gg
Same weakness: CWE-79

V. Comments for CVE-2026-34241

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