CVE-2026-9809: Mautic Core Stored XSS Vulnerability in Projects Component
Summary
CVE-2026-9809: Mautic has Stored Cross-Site Scripting (XSS) in Projects Component. Affects mautic/core versions >= 7.0.0, < 7.1.2. Fixed in 7.1.2. How to fix ↓
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Background
Mautic is an open-source marketing automation platform that enables users to manage campaigns, emails, and forms effectively. It provides tools for tracking user engagement and automating marketing tasks. The Projects component allows users to create and manage projects, but it has a vulnerability that can be exploited by authenticated users to execute malicious scripts.
Vulnerability Detail
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, user-supplied project names are rendered without proper sanitization. An authenticated user with permissions to create or edit projects can exploit this vulnerability to inject malicious script payloads. When an administrative user views an entity associated with a compromised project, the injected script executes within their browser session, potentially allowing an attacker to perform administrative actions, alter system configurations, or exfiltrate sensitive data.
How To Fix
Minimum fixed version
7.1.2
This is the first release that contains the fix.
composer require mautic/core:7.1.2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There are no official workarounds for this vulnerability. However, to mitigate the risk, restrict project creation and modification permissions to trusted administrative users only.
Conclusion
The stored XSS vulnerability in Mautic's Projects component poses a significant risk to administrative users. It is crucial to update to the patched version 7.1.2 or later to protect against potential exploitation. Implementing strict permission controls can also help mitigate risks until an upgrade is possible.
See every vulnerability recorded for mautic/core →
FAQ
The CVSS score of this vulnerability is 7.6, indicating a high severity level.
Mautic versions 7.0.0 to 7.1.1 are affected by this vulnerability. Versions 7.1.2 and later have been patched.
Yes, Mautic 6.x, 5.x, and 4.x branches do not contain the Projects feature and are not affected by this vulnerability.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.
If you cannot upgrade immediately, restrict project creation and modification permissions to trusted administrative users to mitigate the risk.
References
Related vulnerabilities
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