CVE-2025-12673

critical

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3d71404e-0db8-485b-a626-5e0df2076c05?source=cve

https://ryankozak.com/posts/cve-2025-12673/

https://plugins.trac.wordpress.org/changeset/3412218

https://plugins.trac.wordpress.org/browser/flex-qr-code-generator/trunk/qr-code-generator.php#L457

https://github.com/d0n601/CVE-2025-12673

Details

Source: Mitre, NVD

Published: 2025-12-06

Updated: 2026-04-15

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00139