PYSEC-2026-4138 plone.app.portlets Vulnerable to Remote Code Execution via TALES Injection

Impact The Classic portlet plone.app.portlets.portlets.classic used its user-supplied template/macro fields to build a TALES path expression that was then evaluated by the TAL path helper. Because the value was interpreted as a full TALES expression, a user able to add or edit a Classic portlet...