Authenticated SQL Injection (SQLi) vulnerability was discovered by Daniel Krohmer (Fraunhofer IESE, Germany) and Shi Chen (University of Kaiserslautern, Germany) in the WordPress amtyThumb plugin (versions <= 4.2.0).
Deactivate and delete. This plugin has been closed as of May 12, 2022 and is not available for download. This closure is temporary, pending a full review.