Vulnerability Description
The Flex QR Code Generator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the update_qr_code() function in all versions up to, and including, 1.2.7. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/d0n601/CVE-2025-12673
- https://plugins.trac.wordpress.org/browser/flex-qr-code-generator/trunk/qr-code-
- https://plugins.trac.wordpress.org/changeset/3412218
- https://ryankozak.com/posts/cve-2025-12673/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3d71404e-0db8-485b-a62
FAQ
What is CVE-2025-12673?
CVE-2025-12673 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The Flex QR Code Generator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the update_qr_code() function in all versions up to, and including, 1.2.7...
How severe is CVE-2025-12673?
CVE-2025-12673 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-12673?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.