A vulnerability in datastore search sql allowed attackers to inject SQL in order to gain access to private resources and PostgreSQL system information.

The issue has been patched in CKAN 2.10.10 and CKAN 2.11.5

Disable the DataStore SQL search (ckan.datastore.sqlsearch.enabled = false). Note that the SQL search is disabled by default.

As stated in the documentation, this action function has protections that offer some safety but are not designed to prevent all types of abuse. Depending on the sensitivity of private data in a project's DataStore and the likelihood of abuse of a consuming site, a developer may choose to disable this action function or restrict its use with a IAuthFunctions plugin.