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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ajitdas | Flex QR Code Generator | ≤ 1.2.7 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
d0n601/CVE-2025-12673 ★ 0 · Nov 6, 2025
Flex QR Code Generator <= 1.2.6 - Unauthenticated Arbitrary File Upload
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3d71404e-0db8-485b-a626-5e0df2076c05?source=cve
- https://plugins.trac.wordpress.org/browser/flex-qr-code-generator/trunk/qr-code-generator.php#L457
- https://ryankozak.com/posts/cve-2025-12673/
- https://github.com/d0n601/CVE-2025-12673
- https://plugins.trac.wordpress.org/changeset/3412218