CVE-2025-12673 Flex QR Code Generator <= 1.2.7 - Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload arbitrary files via missing validation, potentially leading to remote code execution on WordPress sites.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12673?
CVE-2025-12673 is a critical vulnerability in ajitdas Flex QR Code Generator, published on 6 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2025-12673?
How do I fix CVE-2025-12673?
No fix has been published for CVE-2025-12673 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12673 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-12673 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-pxx4-9f6r-hw6x.