CVE-2026-9809
Mautic Stored XSS in Projects Component
Description
A stored Cross-Site Scripting (XSS) vulnerability exists in the Projects component of Mautic 7. When displaying project tags and popovers on administrative detail views (such as campaigns, emails, or forms), user-supplied project names are rendered without proper sanitization. An authenticated user with permissions to create or edit projects can exploit this to inject malicious script payloads. When an administrative user views an entity associated with a compromised project and hovers over its tag, the injected script executes within the context of their active browser session. This could allow an attacker to perform administrative actions on behalf of the victim, alter system configurations, or exfiltrate sensitive data.
INFO
Published Date :
May 29, 2026, 12:16 p.m.
Last Modified :
July 21, 2026, 12:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 4e531c38-7a33-45d3-98dd-d909c0d8852e | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Sanitize all user-supplied project names before rendering.
- Implement output encoding for displayed project tags.
- Update the Mautic Projects component to the latest version.
- Review and restrict project creation/editing permissions.
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-2026-9809.
| URL | Resource |
|---|---|
| https://github.com/mautic/mautic/security/advisories/GHSA-7h65-whp7-rgqf |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-9809 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-2026-9809
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-2026-9809 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9809 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. 21, 2026
Action Type Old Value New Value Added Translation Title: Mautic 7 de Mautic, Description: Una vulnerabilidad de cross-site scripting (XSS) almacenado existe en el componente Proyectos de Mautic 7. Al mostrar etiquetas de proyecto y popovers en vistas de detalle administrativas (como campañas, correos electrónicos o formularios), los nombres de proyecto proporcionados por el usuario se renderizan sin la sanitización adecuada. Un usuario autenticado con permisos para crear o editar proyectos puede explotar esto para inyectar cargas útiles de script maliciosas. Cuando un usuario administrativo ve una entidad asociada con un proyecto comprometido y pasa el cursor sobre su etiqueta, el script inyectado se ejecuta dentro del contexto de su sesión de navegador activa. Esto podría permitir a un atacante realizar acciones administrativas en nombre de la víctima, alterar configuraciones del sistema o exfiltrar datos sensibles. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/mautic/mautic', 'versions': [{'status': 'affected', 'version': '7.0.0', 'lessThan': '7.1.2', 'versionType': 'semver'}], 'packageName': 'mautic/core', 'collectionURL': 'https://packagist.org', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-9809', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-29T14:39:34.934024Z'} -
New CVE Received by [email protected]
May. 29, 2026
Action Type Old Value New Value Added Description A stored Cross-Site Scripting (XSS) vulnerability exists in the Projects component of Mautic 7. When displaying project tags and popovers on administrative detail views (such as campaigns, emails, or forms), user-supplied project names are rendered without proper sanitization. An authenticated user with permissions to create or edit projects can exploit this to inject malicious script payloads. When an administrative user views an entity associated with a compromised project and hovers over its tag, the injected script executes within the context of their active browser session. This could allow an attacker to perform administrative actions on behalf of the victim, alter system configurations, or exfiltrate sensitive data. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N Added CWE CWE-79 Added Reference https://github.com/mautic/mautic/security/advisories/GHSA-7h65-whp7-rgqf