CVE-2026-55248

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...

plone.app.portlets vulnerable to denial of service via RSS feed portlet

Impact By adding an RSS portlet, and giving this a link to a very large file, a member can cause a denial of service attack, because Plone will use lots of memory. The member could also use different urls to try to get information about the internal network and open port numbers SSRF. A malicious...

EUVD-2026-67864

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...

CVE-2026-55248

plone.app.portlets (Plone CMS) is vulnerable to three issues in its RSS feed portlet, all fixed in versions 5.0.8, 6.0.4, and 7.0.2 . A low-privileged member can set the RSS feed URL to a very large response, causing excessive in-memory data retention and denial of service via the FEED_DATA cache...

CVE-2026-55248 plone.app.portlets: Denial of service via RSS feed portlet

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...