What’s Vulnerable › Vulnerabilities

CVE-2025-12673: Flex QR Code Generator <= 1.2.7 - Unauthenticated Arbitrary File Upload

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-06 · updated 2026-10-15
• Weakness: CWE-434

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

• ajitdas Flex QR Code Generator: through 1.2.7

References

• https://github.com/d0n601/CVE-2025-12673
• https://plugins.trac.wordpress.org/browser/flex-qr-code-generator/trunk/qr-code-generator.php#L457
• 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-a626-5e0df2076c05?source=cve

Get alerted when CVE-2025-12673 or the next vulnerability affects your stack