CVE-2026-34241
CtrlPanel: Stored XSS in Ticket Reply Notifications Allows Session Hijacking
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.
INFO
Published Date :
May 19, 2026, 10:16 p.m.
Last Modified :
July 24, 2026, 9:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-34241
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update CtrlPanel to version 1.2.0 or later.
- Apply vendor patches if available for older versions.
- Sanitize all user-supplied data before storing.
- Escape data rendered in user interfaces.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34241.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34241 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34241
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34241 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34241 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: panel de Ctrlpanel-gg, Description: CtrlPanel es un software de facturación de código abierto para proveedores de alojamiento. Las versiones 1.1.1 y anteriores contienen una vulnerabilidad de cross-site scripting (XSS) almacenado en el sistema de notificación de respuesta de tickets. El contenido de respuesta no saneado ($newmessage) se almacena directamente en las cargas útiles de notificación de la base de datos y luego se renderiza sin escapar a través de la sintaxis {!! !!} de Blade en el navegador del destinatario. La falla existe tanto en App\Notifications\Ticket\Admin\AdminReplyNotification (activada cuando un usuario responde, dirigida a administradores) como en App\Notifications\Ticket\User\ReplyNotification (activada cuando un administrador responde, dirigida a usuarios), permitiendo la ejecución arbitraria de JavaScript en el contexto de la sesión de la víctima. Un atacante con pocos privilegios puede explotar esto para secuestrar sesiones de administrador, recolectar credenciales a través de avisos de inicio de sesión falsos o keyloggers, y escalar privilegios realizando acciones administrativas en nombre de la víctima. La ruta inversa también permite que un administrador malicioso o comprometido ataque a usuarios regulares de la misma manera. Este problema ha sido solucionado en la versión 1.2.0. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Ctrlpanel-gg', 'product': 'panel', 'versions': [{'status': 'affected', 'version': '< 1.2.0'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-34241', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-20T14:08:22.051750Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 20, 2026
Action Type Old Value New Value Added Reference https://github.com/Ctrlpanel-gg/panel/security/advisories/GHSA-cmrr-q3hw-3vqh -
New CVE Received by [email protected]
May. 19, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Added CWE CWE-79 Added Reference https://github.com/Ctrlpanel-gg/panel/releases/tag/1.2.0 Added Reference https://github.com/Ctrlpanel-gg/panel/security/advisories/GHSA-cmrr-q3hw-3vqh