Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, a SQL Injection vulnerability exists in the pwg.users.getList Web Service API method. The filter parameter is directly concatenated into a SQL query without proper sanitization, allowing authenticated administrators to execute arbitrary SQL commands. This issue has been patched in version 16.3.0.
https://piwigo.org/release-16.3.0
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-5jwg-cr5q-vjq2
https://github.com/Piwigo/Piwigo/commit/9df471f16243371dc3725c5262e1632d23c8218a