Vulnerability Description
Wagtail CMS 6.4.1 is vulnerable to a Stored Cross-Site Scripting (XSS) in the document upload functionality. Attackers can inject malicious code inside a PDF file. When a user clicks the document in the CMS interface, the payload executes. NOTE: this is disputed by the Supplier because "It has been well documented that when serving uploaded files using a method outside of Wagtail (which admittedly is the default), it requires additional configuration from the developer, because Wagtail cannot control how these are served. ... For example, if a Wagtail instance is configured to upload files into AWS S3, Wagtail cannot control the permissions on how they're served, nor any headers used when serving them (a limitation of S3)."
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://docs.wagtail.org/en/stable/deployment/under_the_hood.html#documents
- https://github.com/echoBRT/Wagtail-CMS-XSS/
- https://github.com/wagtail/wagtail/discussions/12617
- https://github.com/wagtail/wagtail/pull/12672
- https://github.com/wagtail/wagtail/wiki/Security-team
- https://github.com/echoBRT/Wagtail-CMS-XSS/
FAQ
What is CVE-2025-45388?
CVE-2025-45388 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Wagtail CMS 6.4.1 is vulnerable to a Stored Cross-Site Scripting (XSS) in the document upload functionality. Attackers can inject malicious code inside a PDF file. When a user clicks the document in t...
How severe is CVE-2025-45388?
CVE-2025-45388 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-45388?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.