On behalf of the Zope developer community I am pleased to announce the releases 
of Zope 4.8.11 and 5.8.6.

These bugfix releases solve a few minor issues and contain a security fix. For 
the full list of changes see the change logs at 
https://zope.readthedocs.io/en/4.x/changes.html#id1 and 
https://zope.readthedocs.io/en/latest/changes.html#id1

Installation instructions can be found at 
https://zope.readthedocs.io/en/4.x/INSTALL.html and 
https://zope.readthedocs.io/en/latest/INSTALL.html.

These releases contain a security fix for a cross-site scripting issue 
involving the Zope Management Interface (ZMI) breadcrumbs page element. Text 
stored in title fields was rendered without quoting HTML tags, which could lead 
to script execution if code was stored in the title field.


The related security advisory is published at 
https://github.com/zopefoundation/Zope/security/advisories/GHSA-m755-gxxg-r5qh

Jens Vagelpohl


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