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CVE-2025-12154

HIGH 8.8 CVSS 3.1
Published
December 5, 2025
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-434
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

The Auto Thumbnailer plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the uploadThumb() function in all versions up to, and including, 1.0. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • moderntribe Auto Thumbnailer — Up to and including 1.0

References

  • wordpress.org https://wordpress.org/plugins/auto-thumbnailer/
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/d7c98191-bf17-4e94-88cc-ad385b1fe97d?source=cve
  • nvd.nist.gov Official NVD record