Vulnerability Description
Insufficient sanitization / filtering allows for arbitrary JavaScript Injection in Mautic using the bounce management callback function. The values submitted in the "error" and "error_related_to" parameters of the POST request of the bounce management callback will be permanently stored and executed once the details page of an affected lead is opened by a Mautic user. An attacker with access to the bounce management callback function (identified with the Mailjet webhook, but it is assumed this will work uniformly across all kinds of webhooks) can inject arbitrary JavaScript Code into the "error" and "error_related_to" parameters of the POST request (POST /mailer/<product / webhook>/callback). It is noted that there is no authentication needed to access this function. The JavaScript Code is stored permanently in the web application and executed every time an authenticated user views the details page of a single contact / lead in Mautic. This means, arbitrary code can be executed to, e.g., steal or tamper with information.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Acquia | Mautic | < 3.3.4 |
Related Weaknesses (CWE)
References
- https://github.com/mautic/mautic/security/advisories/GHSA-86pv-95mj-7w5fPatchThird Party Advisory
- https://github.com/mautic/mautic/security/advisories/GHSA-86pv-95mj-7w5fPatchThird Party Advisory
FAQ
What is CVE-2021-27910?
CVE-2021-27910 is a vulnerability with a CVSS score of 8.2 (HIGH). Insufficient sanitization / filtering allows for arbitrary JavaScript Injection in Mautic using the bounce management callback function. The values submitted in the "error" and "error_related_to" para...
How severe is CVE-2021-27910?
CVE-2021-27910 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-27910?
Check the references section above for vendor advisories and patch information. Affected products include: Acquia Mautic.