CVE-2025-12154

Auto Thumbnailer <= 1.0 - Authenticated (Contributor+) Arbitrary File Upload

CVSS 8.8 HIGHEPSS 0.5%CWE-434

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

moderntribe · Auto Thumbnailer

References

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