PT-2026-55510

plone.app.event provides the event content type for Plone. Prior to versions 5.2.4 and 6.0.1, the iCalendar import in src/plone/app/event/ical/importer.py accepts insufficiently restricted calendar and event URLs, does not adequately bound downloaded bytes or imported events, and commits work per...

PT-2026-55511

plone.app.portlets provides portlets and a Plone-specific user interface for plone.portlets. Prior to 5.0.8, 6.0.4, and 7.0.2, a member who can add an RSS portlet can set its feed URL to a very large response, causing src/plone/app/portlets/portlets/rss.py to download and retain excessive data in...

PT-2026-54521

Name of the Vulnerable Software and Affected Versions Plone versions 7.0.0 through 7.0.1 Plone versions 6.0.0 through 6.0.3 Plone versions 5.0.0 through 5.0.7 Description A critical remote code execution RCE flaw allows TALES injection via the Classic portlet. TALES is a templating language used ...

PT-2026-52218

Name of the Vulnerable Software and Affected Versions icalendar versions 7.1.0 through 7.1.2 Description The software contains a flaw in the Component equality method within src/icalendar/cal/component.py that leads to exponential time complexity O2^n relative to nesting depth when comparing nest...